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Finding the Fourth Proportional to 168.28, 251.33 and 134.08

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Solution

The fourth proportional to 168.28, 251.33 and 134.08 is: 200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.28 : 251.33 = 134.08 : x
  2. Step 2: Convert to fraction form
    168.28/251.33 = 134.08/x
  3. Step 3: Cross multiply
    168.28x = 251.33 × 134.08
  4. Step 4: Simplify right side
    168.28x = 33,698.33
  5. Step 5: Solve for x
    x = 33,698.33/168.28
  6. Step 6: Final answer
    x = 200.25

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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.