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Finding the Fourth Proportional to 616.17, 849.11 and 406.11

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Solution

The fourth proportional to 616.17, 849.11 and 406.11 is: 559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.17 : 849.11 = 406.11 : x
  2. Step 2: Convert to fraction form
    616.17/849.11 = 406.11/x
  3. Step 3: Cross multiply
    616.17x = 849.11 × 406.11
  4. Step 4: Simplify right side
    616.17x = 344,830.03
  5. Step 5: Solve for x
    x = 344,830.03/616.17
  6. Step 6: Final answer
    x = 559.63

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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.