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Finding the Fourth Proportional to 18.10, 27.02 and 17.92

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Solution

The fourth proportional to 18.10, 27.02 and 17.92 is: 26.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.10 : 27.02 = 17.92 : x
  2. Step 2: Convert to fraction form
    18.10/27.02 = 17.92/x
  3. Step 3: Cross multiply
    18.10x = 27.02 × 17.92
  4. Step 4: Simplify right side
    18.10x = 484.20
  5. Step 5: Solve for x
    x = 484.20/18.10
  6. Step 6: Final answer
    x = 26.75

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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.