The only thing in common between the two other than both being high winged trimotors is that they were designed around the same time. The first Ford Trimotor model that went into production, the 4-AT
, was introduced in 1926; the Fokker F.7, was introduced in 1925 as a single engine a/c, but didn't become a trimotor until it was modified into one in 1928. The first true trimotor built by Fokker was the F.10, which was introduced in 1927.
There are notable differences between the two types. First off, the tail. The Ford Trimotors had a more squared and angular tail, while the F.7 had a more rounded tail. Then there's the materials the a/c are built out of. The Ford Trimotor was a metal a/c (Which gave it the nickname of the "Tin Goose") while the F.7 still used fabric and wood.
William Stout, who designed the Ford Trimotors, actually in the 1950s tried to come out with a modernized version to be used as a bush a/c. The Bushmaster 2000 has a smooth body and turboprop engines. Only two were built, and one of them crashed at an airshow last September.