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Finding the Fourth Proportional to 981.07, 1,353.87 and 532.93

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Solution

The fourth proportional to 981.07, 1,353.87 and 532.93 is: 735.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    981.07 : 1,353.87 = 532.93 : x
  2. Step 2: Convert to fraction form
    981.07/1,353.87 = 532.93/x
  3. Step 3: Cross multiply
    981.07x = 1,353.87 × 532.93
  4. Step 4: Simplify right side
    981.07x = 721,508.51
  5. Step 5: Solve for x
    x = 721,508.51/981.07
  6. Step 6: Final answer
    x = 735.43

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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.