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Finding the Fourth Proportional to 550.92, 760.08 and 385.32

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Solution

The fourth proportional to 550.92, 760.08 and 385.32 is: 531.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.92 : 760.08 = 385.32 : x
  2. Step 2: Convert to fraction form
    550.92/760.08 = 385.32/x
  3. Step 3: Cross multiply
    550.92x = 760.08 × 385.32
  4. Step 4: Simplify right side
    550.92x = 292,874.03
  5. Step 5: Solve for x
    x = 292,874.03/550.92
  6. Step 6: Final answer
    x = 531.61

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.