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Finding the Fourth Proportional to 150.38, 207.49 and 83.98

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Solution

The fourth proportional to 150.38, 207.49 and 83.98 is: 115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.38 : 207.49 = 83.98 : x
  2. Step 2: Convert to fraction form
    150.38/207.49 = 83.98/x
  3. Step 3: Cross multiply
    150.38x = 207.49 × 83.98
  4. Step 4: Simplify right side
    150.38x = 17,425.01
  5. Step 5: Solve for x
    x = 17,425.01/150.38
  6. Step 6: Final answer
    x = 115.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.