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Finding the Fourth Proportional to 168.64, 253 and 132.32

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Solution

The fourth proportional to 168.64, 253 and 132.32 is: 198.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.64 : 253 = 132.32 : x
  2. Step 2: Convert to fraction form
    168.64/253 = 132.32/x
  3. Step 3: Cross multiply
    168.64x = 253 × 132.32
  4. Step 4: Simplify right side
    168.64x = 33,476.96
  5. Step 5: Solve for x
    x = 33,476.96/168.64
  6. Step 6: Final answer
    x = 198.51

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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.