Finding Missing Percents with Proportions

The video tutorial explains percent proportion, a method to find the percentage of a part relative to a whole. It demonstrates how to set up and solve percent proportions using various examples, including real-life scenarios like spending and dessert distribution. The process involves identifying the part and whole, simplifying fractions, and using cross-multiplication to find the percentage.

What is a percent proportion?

• A method to compare two percentages

• A proportion where part of a quantity is compared to the whole quantity, equivalent to a percent

• A technique to multiply percentages

• A mathematical formula to calculate the whole from a part

How do you set up a percent proportion to find a percent of a quantity?

• 100 over percent equals part over whole

• Percent over 100 equals whole over part

• Whole over part equals 100 over percent

• Part over whole equals percent over 100

In the example, what percent of 110 is 22?

• 10%

• 20%

• 25%

• 50%

What percent of 15 is 9?

• 40%

• 60%

• 50%

• 70%

What percent of 25 is 20?

• 60%

• 90%

• 70%

• 80%

41.4 is what percent of 92?

• 45%

• 35%

• 55%

• 65%

12.75 is what percent of 50?

• 45.5%

• 15.5%

• 25.5%

• 35.5%

Three dollars is what percent of 40 dollars?

• 5.5%

• 6.5%

• 8.5%

• 7.5%

What percent of her paycheck did Ariel spend on Saturday?

• 5%

• 10%

• 15%

• 20%

What percentage of the desserts contain nuts?

• 20%

• 15%

• 25%

• 10%