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Finding the Fourth Proportional to 22.28, 33.37 and 12.13

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Solution

The fourth proportional to 22.28, 33.37 and 12.13 is: 18.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.28 : 33.37 = 12.13 : x
  2. Step 2: Convert to fraction form
    22.28/33.37 = 12.13/x
  3. Step 3: Cross multiply
    22.28x = 33.37 × 12.13
  4. Step 4: Simplify right side
    22.28x = 404.66
  5. Step 5: Solve for x
    x = 404.66/22.28
  6. Step 6: Final answer
    x = 18.17

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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.