Question

Question 20: Determine if the following numbers are in proportion: (i) 4,6,8,12 (ii) 7,42,13,78 (ii) 33,121,9,96 (iv) 22, 33,42,63 (v) 32,48,70,210 vi) 150,200,250,300​

Answer 1

Step-by-step explanation:

1. 4,6,8,12
2. product of means of equal toproduct of extreme
3. 4×12=6×8
4. 48=48
5. Therefore the given numbers are in proportion

1. 7,42,13,78
2. product of means is equal to product of extremes
3. 7×78=42×13
4. 546=546
5. Therefore the given numbers are in proportion