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Finding the Fourth Proportional to 20.04, 29.88 and 18.66

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Solution

The fourth proportional to 20.04, 29.88 and 18.66 is: 27.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.04 : 29.88 = 18.66 : x
  2. Step 2: Convert to fraction form
    20.04/29.88 = 18.66/x
  3. Step 3: Cross multiply
    20.04x = 29.88 × 18.66
  4. Step 4: Simplify right side
    20.04x = 557.56
  5. Step 5: Solve for x
    x = 557.56/20.04
  6. Step 6: Final answer
    x = 27.82

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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.