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Finding the Fourth Proportional to 932.63, 1,398.48 and 542.76

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Solution

The fourth proportional to 932.63, 1,398.48 and 542.76 is: 813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.63 : 1,398.48 = 542.76 : x
  2. Step 2: Convert to fraction form
    932.63/1,398.48 = 542.76/x
  3. Step 3: Cross multiply
    932.63x = 1,398.48 × 542.76
  4. Step 4: Simplify right side
    932.63x = 759,039.00
  5. Step 5: Solve for x
    x = 759,039.00/932.63
  6. Step 6: Final answer
    x = 813.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.