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your proportions will always look like this OF IS = Percent 100 THis should make sense to you when you think about it. Percent is out of 100, so we write it that way. Then what is a number out of another number becomes the 'IS' out of OF. OF IS = Percent 100 So let's get started... What is 12% of 400 "OF" value "IS" value 400 ? x ? = 100 Percent 12 ? 13% of what number is 52? "OF" value "IS" value 52 ? x ? = 100 13 ? Percent 42 is 60% of what number "OF" value "IS" value 42 ? x ? = 100 Percent 60 ? 56 is what percent of 400? "OF" value 400 ? "IS" value 56 ? = Percent 100 x ? Let's get you to try...Fill in the missing value: 78 is what percent of 50? "OF" value "IS" value 78 ? 50 ? = 100 Percent x ? 34 is 6% of what number? "OF" value "IS" value x = 100 Percent 6 Now find more values...fill in all the missing spaces: 53 is what percent of 200? "OF" value "IS" value 200 = Percent 100 90 is 4% of what number? "OF" value "IS" value = Percent 100 Is the proportion below correct? 42 is 54 percent of what number? "OF" value "IS" value 42 54 = Percent 100 100 x no yes Is the proportion below correct? What is 120% of 40 "OF" value "IS" value x 40 = Percent 120 100 100 Yes No Is the proportion below correct? 42 is what percent of 4? "IS" value "OF" value 4 42 = Percent 100 100 x Yes No Note that once you have the proportion written down, you solve it just like you did all those other proportions! For example: 56 is what percent of 23? 56 23 = 100 x Use your calculator to solve this and round to the nearest tenth. x = 56*100 23 |