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Finding the Fourth Proportional to 618.30, 927.12 and 207.39

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Solution

The fourth proportional to 618.30, 927.12 and 207.39 is: 310.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.30 : 927.12 = 207.39 : x
  2. Step 2: Convert to fraction form
    618.30/927.12 = 207.39/x
  3. Step 3: Cross multiply
    618.30x = 927.12 × 207.39
  4. Step 4: Simplify right side
    618.30x = 192,275.42
  5. Step 5: Solve for x
    x = 192,275.42/618.30
  6. Step 6: Final answer
    x = 310.97

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1.5x scale

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.