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Finding the Fourth Proportional to 122.29, 183.45 and 67.44

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Solution

The fourth proportional to 122.29, 183.45 and 67.44 is: 101.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.29 : 183.45 = 67.44 : x
  2. Step 2: Convert to fraction form
    122.29/183.45 = 67.44/x
  3. Step 3: Cross multiply
    122.29x = 183.45 × 67.44
  4. Step 4: Simplify right side
    122.29x = 12,371.87
  5. Step 5: Solve for x
    x = 12,371.87/122.29
  6. Step 6: Final answer
    x = 101.17

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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.