How to use interp function to compare two variables?

[saranyatl]

Hello,
I have a set of data as given below

	A	B	C	D	E
1	X/Y	1	2	3	4
2	10	1.1	1.3	1.5	1.8
3	20	1.5	1.6	1.7	2
4	30	1.8	2	2.5	3
5	40	1.9	2.5	3.2	4.5

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Another table is to be filled by interpolating from the data above.

	F	G	H
1	X	Y	To be Filled
2	11	1.05
3	13	1.7
4	15	1.96
5	22	2.58

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How to fill data with interp function? can Vlookup be used for the same??