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Finding the Fourth Proportional to 616.10, 923.40 and 245.61

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Solution

The fourth proportional to 616.10, 923.40 and 245.61 is: 368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.10 : 923.40 = 245.61 : x
  2. Step 2: Convert to fraction form
    616.10/923.40 = 245.61/x
  3. Step 3: Cross multiply
    616.10x = 923.40 × 245.61
  4. Step 4: Simplify right side
    616.10x = 226,796.27
  5. Step 5: Solve for x
    x = 226,796.27/616.10
  6. Step 6: Final answer
    x = 368.12

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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.