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Finding the Fourth Proportional to 67.97, 101.36 and 64.22

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Solution

The fourth proportional to 67.97, 101.36 and 64.22 is: 95.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.97 : 101.36 = 64.22 : x
  2. Step 2: Convert to fraction form
    67.97/101.36 = 64.22/x
  3. Step 3: Cross multiply
    67.97x = 101.36 × 64.22
  4. Step 4: Simplify right side
    67.97x = 6,508.99
  5. Step 5: Solve for x
    x = 6,508.99/67.97
  6. Step 6: Final answer
    x = 95.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.