Hello,

I need to find the pressure of steam at $\displaystyle 98C^{o} $

however my steam table does not give a value for 98C, however does give a value for 95C and 100C,

I am told in order to find the pressure of steam at 98C I have interpolate from the tables,

I am not sure how to do this?

at 95C the pressure is 0.08453MPa

and at 100C the pressure is 0.1013MPa

and since 98C is not half way between, how would I interpolate?

is it $\displaystyle \frac{3}{5} ( 0.08453 + 0.1013) ? $ Multiplying by 3/5 as its 3 units away from 95 and after that another 5 units to 100C

Is this correct?

Thanks.