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Finding the Fourth Proportional to 67.34, 101.21 and 36.92

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Solution

The fourth proportional to 67.34, 101.21 and 36.92 is: 55.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.34 : 101.21 = 36.92 : x
  2. Step 2: Convert to fraction form
    67.34/101.21 = 36.92/x
  3. Step 3: Cross multiply
    67.34x = 101.21 × 36.92
  4. Step 4: Simplify right side
    67.34x = 3,735.98
  5. Step 5: Solve for x
    x = 3,735.98/67.34
  6. Step 6: Final answer
    x = 55.48

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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.