Yes, 1/4 is a rational number. A rational number is defined as any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.
In the case of 1/4, it can be represented as the fraction where 1 is the numerator (an integer) and 4 is the denominator (also an integer). Since the denominator is not zero, 1/4 fulfills the criteria for being a rational number.
Moreover, rational numbers can be positive, negative, or zero. Since 1/4 is positive, it is specifically classified as a positive rational number. Also, rational numbers can be expressed in decimal form, which for 1/4 is 0.25, and this value also confirms its rationality since it has a finite decimal representation.