Question

1. Show that:
(a) (1) 5, 6, 10, 12 are in proportion. (ii) 7,8,11,12 are not in proportion.
(b) 15,32, 135, 225 are not in proportion. (ii) 20, 30, 40, 50 are not in proportion.
2. Find x, if
(a) () 30:40::x: 60
(ii) 36, 48, x are in continued proportion.
(b) 0 2:9::x:27
(ii) X, 12, 36 are in continued proportion.
3. (a) Find the third proportional to 12 and 18. (b) Find the fourth proportional to 33,44, 66.
4. (a) Find the mean proportional to 16 and 25. (b) Find the mean proportional to 36 and 49.​

Answer 1

Step-by-step explanation:

a)5 : 6 :: 10 : 12

5×12=6×10

60=60

hope it will help you

Answer 2

bro this is the answer ☝