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Finding the Fourth Proportional to 925.15, 1,276.83 and 532.21

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Solution

The fourth proportional to 925.15, 1,276.83 and 532.21 is: 734.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.15 : 1,276.83 = 532.21 : x
  2. Step 2: Convert to fraction form
    925.15/1,276.83 = 532.21/x
  3. Step 3: Cross multiply
    925.15x = 1,276.83 × 532.21
  4. Step 4: Simplify right side
    925.15x = 679,541.69
  5. Step 5: Solve for x
    x = 679,541.69/925.15
  6. Step 6: Final answer
    x = 734.52

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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.