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Finding the Fourth Proportional to 616.29, 849.90 and 406.38

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Solution

The fourth proportional to 616.29, 849.90 and 406.38 is: 560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.29 : 849.90 = 406.38 : x
  2. Step 2: Convert to fraction form
    616.29/849.90 = 406.38/x
  3. Step 3: Cross multiply
    616.29x = 849.90 × 406.38
  4. Step 4: Simplify right side
    616.29x = 345,382.36
  5. Step 5: Solve for x
    x = 345,382.36/616.29
  6. Step 6: Final answer
    x = 560.42

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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.