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Finding the Fourth Proportional to 925.28, 1,276.96 and 532.32

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Solution

The fourth proportional to 925.28, 1,276.96 and 532.32 is: 734.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.28 : 1,276.96 = 532.32 : x
  2. Step 2: Convert to fraction form
    925.28/1,276.96 = 532.32/x
  3. Step 3: Cross multiply
    925.28x = 1,276.96 × 532.32
  4. Step 4: Simplify right side
    925.28x = 679,751.35
  5. Step 5: Solve for x
    x = 679,751.35/925.28
  6. Step 6: Final answer
    x = 734.64

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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.