Question

(i) State the condition for four numbers a, b, c, d to be proportional. Show
that the numbers 2, 3, 9, 10 are not proportional.​

Answer 1

Answer:

any 4 numbers can be proportional if their ratio is equal.

if a,b,c and d are 4 numbers, then their ratio can be equal if a:b=c:d...........

2:3 is not equal to 9:10, so they are not proportional.

Hope, it helps you........