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Finding the Fourth Proportional to 20.06, 29.92 and 18.54

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Solution

The fourth proportional to 20.06, 29.92 and 18.54 is: 27.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.06 : 29.92 = 18.54 : x
  2. Step 2: Convert to fraction form
    20.06/29.92 = 18.54/x
  3. Step 3: Cross multiply
    20.06x = 29.92 × 18.54
  4. Step 4: Simplify right side
    20.06x = 554.67
  5. Step 5: Solve for x
    x = 554.67/20.06
  6. Step 6: Final answer
    x = 27.66

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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.