Rational Relationships
Do the ratios form a proportion?
(1/2):3 and (6/2):18
Yes - both ratios have a value of 1:6
Do the ratios form a proportion?
5:4 and 16:20
No, one has a value of 1.25:1 the other has a value of 1:1.25
Do the ratios form a proportion?
3.6:10.8 and 4.5:13.5
Yes - each has a ratio value of 1:3
Do the ratios form a proportion?
7:10 and 28:40
Yes, one is scaled up by a factor of 4
Do the ratios form a proportion?
6.8:3.4 and 5.2:10.4
No - one has a value of 1:2, the other has a value of 2:1
Do the ratios form a proportion?
36:9 and 20:5
Yes, both have a value of 4:1
No, one has 0.183 grams of protein per gram, the other is 0.16875.
Ice cream shop A charges $7 for two scoops of ice cream. Shop B charges $10.50 for three scoops. Are the rates proportional?
Yes, both charge $3.50 per scoop
Do the ratios form a proportion?
(3/4):(5/6) and (6/10):(10/15)
Yes, try cross products
A runner completes the 400m race in 72s. She also completes the 1600m race in 4min 48s. Does she run both races at the same pace?
Yes