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Finding the Fourth Proportional to 439.92, 656.88 and 375.12

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Solution

The fourth proportional to 439.92, 656.88 and 375.12 is: 560.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.92 : 656.88 = 375.12 : x
  2. Step 2: Convert to fraction form
    439.92/656.88 = 375.12/x
  3. Step 3: Cross multiply
    439.92x = 656.88 × 375.12
  4. Step 4: Simplify right side
    439.92x = 246,408.83
  5. Step 5: Solve for x
    x = 246,408.83/439.92
  6. Step 6: Final answer
    x = 560.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.