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Finding the Fourth Proportional to 220.85, 332.48 and 201.71

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Solution

The fourth proportional to 220.85, 332.48 and 201.71 is: 303.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.85 : 332.48 = 201.71 : x
  2. Step 2: Convert to fraction form
    220.85/332.48 = 201.71/x
  3. Step 3: Cross multiply
    220.85x = 332.48 × 201.71
  4. Step 4: Simplify right side
    220.85x = 67,061.87
  5. Step 5: Solve for x
    x = 67,061.87/220.85
  6. Step 6: Final answer
    x = 303.66

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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.