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Finding the Fourth Proportional to 1,033.54, 1,542.16 and 929.77

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Solution

The fourth proportional to 1,033.54, 1,542.16 and 929.77 is: 1,387.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.54 : 1,542.16 = 929.77 : x
  2. Step 2: Convert to fraction form
    1,033.54/1,542.16 = 929.77/x
  3. Step 3: Cross multiply
    1,033.54x = 1,542.16 × 929.77
  4. Step 4: Simplify right side
    1,033.54x = 1,433,854.10
  5. Step 5: Solve for x
    x = 1,433,854.10/1,033.54
  6. Step 6: Final answer
    x = 1,387.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.