Which skill is primarily tested when calculating ratios and proportions?

Calculating ratios and proportions fundamentally involves understanding numerical relationships and performing mathematical operations with numbers. This process requires the ability to interpret numerical information, manipulate numeric data, and apply mathematical rules effectively. Numerical reasoning encompasses all these skills, as it focuses on an individual's capacity to work with numerical data, identify patterns, and draw logical conclusions based on quantitative information. In mathematical contexts, this often translates to practical applications like solving for unknowns, comparing quantities, and making mathematical inferences, all of which are key components when dealing with ratios and proportions.

While the other options relate to different skill sets—verbal reasoning typically pertains to language and comprehension, narrative understanding focuses on interpreting and analyzing stories or texts, and quantitative analysis often involves deeper statistical or contextual interpretations—numerical reasoning is the most direct skill applied when one is specifically calculating and working with ratios and proportions.