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Finding the Fourth Proportional to 618.52, 927.74 and 207.66

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Solution

The fourth proportional to 618.52, 927.74 and 207.66 is: 311.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.52 : 927.74 = 207.66 : x
  2. Step 2: Convert to fraction form
    618.52/927.74 = 207.66/x
  3. Step 3: Cross multiply
    618.52x = 927.74 × 207.66
  4. Step 4: Simplify right side
    618.52x = 192,654.49
  5. Step 5: Solve for x
    x = 192,654.49/618.52
  6. Step 6: Final answer
    x = 311.48

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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.