Since the prism and pyramid have congruent bases and height, the volume of the prism can be calculated using the formula for the volume of a prism, which is V = B × h, where B is the area of the base and h is the height.
Given that the volume of the pyramid is 48 in.³, we know that the volume of the pyramid is equal to one-third of the volume of the prism, as they have the same base and height. Therefore, the volume of the prism can be calculated as follows:
Volume of prism = 3 × Volume of pyramid
Volume of prism = 3 × 48 in.³
Volume of prism = 144 in.³
Therefore, the volume of the rectangular prism is 144 in.³.