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Finding the Fourth Proportional to 166.32, 249.60 and 102.24

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Solution

The fourth proportional to 166.32, 249.60 and 102.24 is: 153.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.32 : 249.60 = 102.24 : x
  2. Step 2: Convert to fraction form
    166.32/249.60 = 102.24/x
  3. Step 3: Cross multiply
    166.32x = 249.60 × 102.24
  4. Step 4: Simplify right side
    166.32x = 25,519.10
  5. Step 5: Solve for x
    x = 25,519.10/166.32
  6. Step 6: Final answer
    x = 153.43

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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.