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Finding the Fourth Proportional to 616.61, 849.82 and 466.87

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Solution

The fourth proportional to 616.61, 849.82 and 466.87 is: 643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.61 : 849.82 = 466.87 : x
  2. Step 2: Convert to fraction form
    616.61/849.82 = 466.87/x
  3. Step 3: Cross multiply
    616.61x = 849.82 × 466.87
  4. Step 4: Simplify right side
    616.61x = 396,758.55
  5. Step 5: Solve for x
    x = 396,758.55/616.61
  6. Step 6: Final answer
    x = 643.45

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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.