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Finding the Fourth Proportional to 732.77, 1,098.65 and 385.73

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Solution

The fourth proportional to 732.77, 1,098.65 and 385.73 is: 578.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.77 : 1,098.65 = 385.73 : x
  2. Step 2: Convert to fraction form
    732.77/1,098.65 = 385.73/x
  3. Step 3: Cross multiply
    732.77x = 1,098.65 × 385.73
  4. Step 4: Simplify right side
    732.77x = 423,786.46
  5. Step 5: Solve for x
    x = 423,786.46/732.77
  6. Step 6: Final answer
    x = 578.34

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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.