## What are examples of proportions in real-life?

Some of the real-life applications of direct proportion are listed below:

- Food Preparation at Home.
- Cost of an Object vs the Number of Objects Purchased.
- Earning of a Worker per Day.
- Food Requirement at a Hostel.
- Petrol Consumption and Distance Travelled.
- Shadow and Height of Objects.
- Age and Height of a Person.

## What are three real world examples of proportional relationships in use?

Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.

**How do you use proportional relationships?**

The equation that represents a proportional relationship, or a line, is y=kx, where k is the constant of proportionality. Use k=yx from either a table or a graph to find k and create the equation. Proportional relationships can be represented by tables, graphs and equations.

**How are ratios and proportions used in real life?**

In the real world, ratios and proportions are used on a daily basis. Ratios and proportions are also used in business when dealing with money. For example, a business might have a ratio for the amount of profit earned per sale of a certain product such as $2.50:1, which says that the business gains $2.50 for each sale.

### How do you tell if there is a proportional relationship?

To see if multiple ratios are proportional, you could write them as fractions, reduce them, and compare them. If the reduced fractions are all the same, then you have proportional ratios.

### What way will you apply proportion to solve real life problems?

We can use proportions to solve real-world problems by using the following steps:

- Use the information in the problem to set up two ratios comparing the same quantities.
- Set the ratios equal creating a proportion.
- Use cross multiplication to solve for the unknown in the proportion.

**How can you find a proportional relationship?**

You can tell if a table shows a proportional relationship by calculating the ratio of each pair of values. If those ratios are all the same, the table shows a proportional relationship.