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Finding the Fourth Proportional to 475.52, 656 and 392.32

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Solution

The fourth proportional to 475.52, 656 and 392.32 is: 541.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.52 : 656 = 392.32 : x
  2. Step 2: Convert to fraction form
    475.52/656 = 392.32/x
  3. Step 3: Cross multiply
    475.52x = 656 × 392.32
  4. Step 4: Simplify right side
    475.52x = 257,361.92
  5. Step 5: Solve for x
    x = 257,361.92/475.52
  6. Step 6: Final answer
    x = 541.22

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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.