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Finding the Fourth Proportional to 520.67, 781.01 and 173.94

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Solution

The fourth proportional to 520.67, 781.01 and 173.94 is: 260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.67 : 781.01 = 173.94 : x
  2. Step 2: Convert to fraction form
    520.67/781.01 = 173.94/x
  3. Step 3: Cross multiply
    520.67x = 781.01 × 173.94
  4. Step 4: Simplify right side
    520.67x = 135,848.01
  5. Step 5: Solve for x
    x = 135,848.01/520.67
  6. Step 6: Final answer
    x = 260.91

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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.