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Finding the Fourth Proportional to 616.39, 923.94 and 342.61

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Solution

The fourth proportional to 616.39, 923.94 and 342.61 is: 513.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.39 : 923.94 = 342.61 : x
  2. Step 2: Convert to fraction form
    616.39/923.94 = 342.61/x
  3. Step 3: Cross multiply
    616.39x = 923.94 × 342.61
  4. Step 4: Simplify right side
    616.39x = 316,551.08
  5. Step 5: Solve for x
    x = 316,551.08/616.39
  6. Step 6: Final answer
    x = 513.56

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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.