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Finding the Fourth Proportional to 616.09, 921.84 and 372.79

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Solution

The fourth proportional to 616.09, 921.84 and 372.79 is: 557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.09 : 921.84 = 372.79 : x
  2. Step 2: Convert to fraction form
    616.09/921.84 = 372.79/x
  3. Step 3: Cross multiply
    616.09x = 921.84 × 372.79
  4. Step 4: Simplify right side
    616.09x = 343,652.73
  5. Step 5: Solve for x
    x = 343,652.73/616.09
  6. Step 6: Final answer
    x = 557.80

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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.