Finding the Fourth Proportional to 379.05, 522.99 and 231.75
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Solution
The fourth proportional to 379.05, 522.99 and 231.75 is: 319.75
Step by Step Solution
- Step 1: Write the proportion equation
379.05 : 522.99 = 231.75 : x - Step 2: Convert to fraction form
379.05/522.99 = 231.75/x - Step 3: Cross multiply
379.05x = 522.99 × 231.75 - Step 4: Simplify right side
379.05x = 121,202.93 - Step 5: Solve for x
x = 121,202.93/379.05 - Step 6: Final answer
x = 319.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.