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Finding the Fourth Proportional to 168.94, 252.92 and 99.32

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Solution

The fourth proportional to 168.94, 252.92 and 99.32 is: 148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.94 : 252.92 = 99.32 : x
  2. Step 2: Convert to fraction form
    168.94/252.92 = 99.32/x
  3. Step 3: Cross multiply
    168.94x = 252.92 × 99.32
  4. Step 4: Simplify right side
    168.94x = 25,120.01
  5. Step 5: Solve for x
    x = 25,120.01/168.94
  6. Step 6: Final answer
    x = 148.69

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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.