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Finding the Fourth Proportional to 207.38, 310.62 and 104.49

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Solution

The fourth proportional to 207.38, 310.62 and 104.49 is: 156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.38 : 310.62 = 104.49 : x
  2. Step 2: Convert to fraction form
    207.38/310.62 = 104.49/x
  3. Step 3: Cross multiply
    207.38x = 310.62 × 104.49
  4. Step 4: Simplify right side
    207.38x = 32,456.68
  5. Step 5: Solve for x
    x = 32,456.68/207.38
  6. Step 6: Final answer
    x = 156.51

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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.