Give an example of a proportion using only numbers. How do you know it is a proportion?

Answer 1

26:100 or 26/100

it's a proportion, fraction or ratio. they're all equivalent

26 out of 100 registered voters voted

put one number on top of the other and draw a short horizontal line between them, or slanted: - or /

or put a colon between them: : and then you have it, a proportion, fraction or ratio

class is 200 students, 75 are boys, 125 are girls

boy girl ratio is 75:125, 75/125 = 3/5

or 75/(125+75) = 75/200 = 37.5% boys

proportions are percentages, if between zero and a hundred

percents = decimals multiplied by 100. 75% = .75 = 0.75