Question

Is 2:3 and 4:5 in proportion

Answer 1

Answer:

given ratios are 2:3 and 4:5

product of extremes = 2 × 5 = 10

and

product of means = 3 × 4 = 12

clearly,

product of means ≠ product of extremes

so, the given ratios are not in proportion.

$.$

Answer 2

Answer:

No they are not in proportion because there is a rule of propotion that product of two middle values means 3 and 4 should be eqal to the product of rest values 4and 5

and they are not equal

as 2*5=10

and 3*4=12

so they are not in propotion