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Finding the Fourth Proportional to 18.01, 27.07 and 14.78

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Solution

The fourth proportional to 18.01, 27.07 and 14.78 is: 22.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.01 : 27.07 = 14.78 : x
  2. Step 2: Convert to fraction form
    18.01/27.07 = 14.78/x
  3. Step 3: Cross multiply
    18.01x = 27.07 × 14.78
  4. Step 4: Simplify right side
    18.01x = 400.09
  5. Step 5: Solve for x
    x = 400.09/18.01
  6. Step 6: Final answer
    x = 22.22

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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.