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Finding the Fourth Proportional to 1,035.52, 1,429.04 and 615.92

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Solution

The fourth proportional to 1,035.52, 1,429.04 and 615.92 is: 849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.52 : 1,429.04 = 615.92 : x
  2. Step 2: Convert to fraction form
    1,035.52/1,429.04 = 615.92/x
  3. Step 3: Cross multiply
    1,035.52x = 1,429.04 × 615.92
  4. Step 4: Simplify right side
    1,035.52x = 880,174.32
  5. Step 5: Solve for x
    x = 880,174.32/1,035.52
  6. Step 6: Final answer
    x = 849.98

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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.