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Finding the Fourth Proportional to 13.49, 20.22 and 6.73

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Solution

The fourth proportional to 13.49, 20.22 and 6.73 is: 10.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13.49 : 20.22 = 6.73 : x
  2. Step 2: Convert to fraction form
    13.49/20.22 = 6.73/x
  3. Step 3: Cross multiply
    13.49x = 20.22 × 6.73
  4. Step 4: Simplify right side
    13.49x = 136.08
  5. Step 5: Solve for x
    x = 136.08/13.49
  6. Step 6: Final answer
    x = 10.09

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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.