Finding the Fourth Proportional to 434.91, 652.39 and 212.75
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Solution
The fourth proportional to 434.91, 652.39 and 212.75 is: 319.14
Step by Step Solution
- Step 1: Write the proportion equation
434.91 : 652.39 = 212.75 : x - Step 2: Convert to fraction form
434.91/652.39 = 212.75/x - Step 3: Cross multiply
434.91x = 652.39 × 212.75 - Step 4: Simplify right side
434.91x = 138,795.97 - Step 5: Solve for x
x = 138,795.97/434.91 - Step 6: Final answer
x = 319.14
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.