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Finding the Fourth Proportional to 616.14, 923.40 and 461.43

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Solution

The fourth proportional to 616.14, 923.40 and 461.43 is: 691.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.14 : 923.40 = 461.43 : x
  2. Step 2: Convert to fraction form
    616.14/923.40 = 461.43/x
  3. Step 3: Cross multiply
    616.14x = 923.40 × 461.43
  4. Step 4: Simplify right side
    616.14x = 426,084.46
  5. Step 5: Solve for x
    x = 426,084.46/616.14
  6. Step 6: Final answer
    x = 691.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.