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Finding the Fourth Proportional to 507.92, 761.55 and 345.10

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Solution

The fourth proportional to 507.92, 761.55 and 345.10 is: 517.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.92 : 761.55 = 345.10 : x
  2. Step 2: Convert to fraction form
    507.92/761.55 = 345.10/x
  3. Step 3: Cross multiply
    507.92x = 761.55 × 345.10
  4. Step 4: Simplify right side
    507.92x = 262,810.91
  5. Step 5: Solve for x
    x = 262,810.91/507.92
  6. Step 6: Final answer
    x = 517.43

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Double scale
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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.