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Finding the Fourth Proportional to 166.96, 250.64 and 112.72

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Solution

The fourth proportional to 166.96, 250.64 and 112.72 is: 169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.96 : 250.64 = 112.72 : x
  2. Step 2: Convert to fraction form
    166.96/250.64 = 112.72/x
  3. Step 3: Cross multiply
    166.96x = 250.64 × 112.72
  4. Step 4: Simplify right side
    166.96x = 28,252.14
  5. Step 5: Solve for x
    x = 28,252.14/166.96
  6. Step 6: Final answer
    x = 169.22

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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.