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Finding the Fourth Proportional to 217.61, 325.77 and 166.44

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Solution

The fourth proportional to 217.61, 325.77 and 166.44 is: 249.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.61 : 325.77 = 166.44 : x
  2. Step 2: Convert to fraction form
    217.61/325.77 = 166.44/x
  3. Step 3: Cross multiply
    217.61x = 325.77 × 166.44
  4. Step 4: Simplify right side
    217.61x = 54,221.16
  5. Step 5: Solve for x
    x = 54,221.16/217.61
  6. Step 6: Final answer
    x = 249.17

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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.