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Finding the Fourth Proportional to 166.08, 247.32 and 161.72

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Solution

The fourth proportional to 166.08, 247.32 and 161.72 is: 240.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.08 : 247.32 = 161.72 : x
  2. Step 2: Convert to fraction form
    166.08/247.32 = 161.72/x
  3. Step 3: Cross multiply
    166.08x = 247.32 × 161.72
  4. Step 4: Simplify right side
    166.08x = 39,996.02
  5. Step 5: Solve for x
    x = 39,996.02/166.08
  6. Step 6: Final answer
    x = 240.83

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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.