Final answer:
The fraction 4/10 is a proper fraction because its numerator (4) is less than its denominator (10), which results in a value less than 1.
Step-by-step explanation:
The fraction 4/10 is a type of fraction known as a proper fraction. A proper fraction is defined as a fraction where the numerator (the top number) is less than the denominator (the bottom number). This means that the value of the fraction is less than 1. In contrast, an improper fraction has a numerator that is greater than or equal to its denominator, resulting in a value greater or equal to 1. A mixed fraction combines a whole number with a proper fraction. Since 4 is less than 10, 4/10 does not fit the definition of an improper or mixed fraction.