If you're asking what the middle number is (also called the average), then the answer is 325.
450 is half way between 300 and 600.
175
3550
half of 700 is 350 and half of 70 is 35
it is 325
650
450 is half way between 300 and 600.
It is: (300+400)/2 = 350
175
175
350 + 300 = 650
3550
300
50, 100, 150, 200, 250, 300, 350, . . .
half of 700 is 350 and half of 70 is 35
Usually a question like this should be something like 200 or something it would be about 225 for half of 50
That is the intake manifold casting number from a 1970 350 CI 300 HP engine.