Final answer:
For the inequality a/c > b/c to hold true given that a > b, the real number c must be positive and non-zero.
Step-by-step explanation:
The inequality a/c > b/c is true under certain conditions regarding the real number c. Since a is greater than b (a > b), dividing both by the same non-zero number should keep the inequality the same, provided that this number is positive. However, if c is negative, the inequality will reverse, such that a/c < b/c. Thus, for a/c > b/c to hold true, c must be a positive non-zero real number.