Proportions and Ratio Tables

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the two ratios and set the products equal to each other.

Front

If 3 pounds of granola cost $3.75, what is the cost per pound?

Back

The cost per pound is $1.25.

Front

If Will can buy 3 pounds of granola for $3.75, how many pounds can he buy for $10?

Back

Will can buy 8 pounds of granola for $10.

Front

What is the formula for finding the unit rate?

Back

The unit rate is found by dividing the total quantity by the number of units, expressed as 'quantity per unit'.

Front

Back

x = 28.

Front

How do you find missing values in a ratio table?

Back

To find missing values in a ratio table, use equivalent ratios and cross-multiplication.

Front

If Tony ran 4 miles and burned 640 calories, how many calories did he burn per mile?

Back

Tony burned 160 calories per mile.

Front

If Mr. Jones travels 6 miles in 10 minutes, how far will he travel in 15 minutes?

Back

Mr. Jones will travel 9 miles in 15 minutes.