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Finding the Fourth Proportional to 618.11, 925.31 and 373.89

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Solution

The fourth proportional to 618.11, 925.31 and 373.89 is: 559.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.11 : 925.31 = 373.89 : x
  2. Step 2: Convert to fraction form
    618.11/925.31 = 373.89/x
  3. Step 3: Cross multiply
    618.11x = 925.31 × 373.89
  4. Step 4: Simplify right side
    618.11x = 345,962.29
  5. Step 5: Solve for x
    x = 345,962.29/618.11
  6. Step 6: Final answer
    x = 559.71

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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.