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Finding the Fourth Proportional to 168.19, 251.75 and 116.57

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Solution

The fourth proportional to 168.19, 251.75 and 116.57 is: 174.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.19 : 251.75 = 116.57 : x
  2. Step 2: Convert to fraction form
    168.19/251.75 = 116.57/x
  3. Step 3: Cross multiply
    168.19x = 251.75 × 116.57
  4. Step 4: Simplify right side
    168.19x = 29,347.42
  5. Step 5: Solve for x
    x = 29,347.42/168.19
  6. Step 6: Final answer
    x = 174.49

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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.