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Finding the Fourth Proportional to 520.92, 781.39 and 196.29

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Solution

The fourth proportional to 520.92, 781.39 and 196.29 is: 294.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.92 : 781.39 = 196.29 : x
  2. Step 2: Convert to fraction form
    520.92/781.39 = 196.29/x
  3. Step 3: Cross multiply
    520.92x = 781.39 × 196.29
  4. Step 4: Simplify right side
    520.92x = 153,378.55
  5. Step 5: Solve for x
    x = 153,378.55/520.92
  6. Step 6: Final answer
    x = 294.44

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Double scale
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Similar ratio
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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.