Question

1. Determine if the following numbers are in proportion
(i) 4. 6, 8, 12
(ii) 7. 42, 13, 78
(iv) 22, 33, 42, 63
(v) 32, 48, 70, 210​

Answer 1

Answer:

formula to check whether the given quantities are in proportion.

product of mean = product of extreme

1. 6×8=12×4

48=48

hence it is in proportion

2. 42×13=78×7

546=546

hence it is proprotion

3. 33×42=63×22

1386=1386

hence it is in proportion

4. 48×70=210×32

3360=6720

hence it is not in proprotion.