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Finding the Fourth Proportional to 220.25, 332.11 and 216.14

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Solution

The fourth proportional to 220.25, 332.11 and 216.14 is: 325.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.25 : 332.11 = 216.14 : x
  2. Step 2: Convert to fraction form
    220.25/332.11 = 216.14/x
  3. Step 3: Cross multiply
    220.25x = 332.11 × 216.14
  4. Step 4: Simplify right side
    220.25x = 71,780.05
  5. Step 5: Solve for x
    x = 71,780.05/220.25
  6. Step 6: Final answer
    x = 325.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.