Arm SIZE Question !!!

[the big 1]

I know this is a very generic question, and arm size is mainly determined by your genetic make up and other factors, but i was wondering how much net weight would one have to add to the whole body to add maybe an inch...

for example ; i weight 190 ish at 15%bf and my arms are a hair away from 16 inchs (cold). Now how much quality weight would i have to add to my whole frame to get them to say... 17 inchs (cold), i know this is generic and that its not certain that my arms would get bigger through adding more weight, but is there a general rule of thumb for this ???

I heard every time your squat goes up so does your bench, and when your bench goes up so does your push press etc etc...

thoughts ??? opinions ??? theorys ??? thanks