Measure the diameter of the throttle body neck and your intake.

If they're different a rubber shop might be able to help you out (Clark Rubber or any plumbing shop) or more automotive shops might have some adapters (SCA, Autobahn, Repco etc).

Alternatively if it's just a few mm out then you can heat the intake hose with a hair dryer, slip some lube on the inside (vaseline yo) and slide it over with some force.