Having recently come across this particular distinction, we thought it would be noteworthy to clear it up.
Inquire, meaning to ask for further information, is generally interchangeable with enquire — which is more frequently used in British English.
Some argue that enquire is used in informal instances whereas inquire is more so reserved for formal examinations.
Let’s look at a few examples to fully illustrate the words’ uses:
He was unsure of the movie time, so he enquired further.
They couldn’t help but enquire as to whether the baby was a boy or a girl.
Inquiries were made by the attorney regarding the state of affairs.
She was obligated to inquire about which index to follow for the proper information.