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Finding the Fourth Proportional to 168.88, 253.20 and 108.04

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Solution

The fourth proportional to 168.88, 253.20 and 108.04 is: 161.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.88 : 253.20 = 108.04 : x
  2. Step 2: Convert to fraction form
    168.88/253.20 = 108.04/x
  3. Step 3: Cross multiply
    168.88x = 253.20 × 108.04
  4. Step 4: Simplify right side
    168.88x = 27,355.73
  5. Step 5: Solve for x
    x = 27,355.73/168.88
  6. Step 6: Final answer
    x = 161.98

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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.