Question

find the second term of a proportion whose 1st.3rd.and 4th terms are 42 70 and 35​

Answer 1

Answer:

21

Step-by-step explanation:

Let the second term is X.

Then, 42 : X :: 70 : 35

or,

$\frac{42}{x} = \frac{70}{35}$

or,

$\frac{42}{x} = \frac{2}{1}$

or,

$2x = 42$

or,

$x = \frac{42}{2} = 21$

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Answer 2

Solution:-

1st:x::3rd:4th

42:x::70:35

Mean ×Mean=Extream×Extream

70x =42×35

x=42×35÷70

x=1470÷70

x=21

So, 4th term = 21

So, 4th term = 21 Hope it helps you