Comparing Proportions

Front

What is a proportion?

Back

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

Front

How do you compare two proportions?

Back

You can compare two proportions by cross-multiplying and checking if the products are equal.

Front

What does it mean if two proportions are equivalent?

Back

If two proportions are equivalent, it means they represent the same relationship between quantities.

Front

What is the formula for finding a missing value in a proportion?

Back

The formula is a/b = c/d, where you can find the missing value by cross-multiplying.

Front

What is a ratio?

Back

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

Front

How can you express a ratio as a fraction?

Back

A ratio can be expressed as a fraction by placing the first quantity over the second quantity.

Front

What is the relationship between ratios and proportions?

Back

Ratios are used to form proportions, which compare two ratios to see if they are equivalent.

Front

What is the significance of the term 'per hour' in comparing rates?

Back

'Per hour' indicates a rate of change, allowing for comparison of how much of something occurs in one hour.

Front

How do you calculate the difference between two rates?

Back

To calculate the difference, subtract the lower rate from the higher rate.

Front

What does it mean to run faster by a certain amount per hour?

Back

It means the speed increase is measured in distance covered in one hour compared to another speed.