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Finding the Fourth Proportional to 520.96, 781.20 and 232.39

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Solution

The fourth proportional to 520.96, 781.20 and 232.39 is: 348.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.96 : 781.20 = 232.39 : x
  2. Step 2: Convert to fraction form
    520.96/781.20 = 232.39/x
  3. Step 3: Cross multiply
    520.96x = 781.20 × 232.39
  4. Step 4: Simplify right side
    520.96x = 181,543.07
  5. Step 5: Solve for x
    x = 181,543.07/520.96
  6. Step 6: Final answer
    x = 348.48

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.