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Finding the Fourth Proportional to 222.16, 332.28 and 201.72

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Solution

The fourth proportional to 222.16, 332.28 and 201.72 is: 301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.16 : 332.28 = 201.72 : x
  2. Step 2: Convert to fraction form
    222.16/332.28 = 201.72/x
  3. Step 3: Cross multiply
    222.16x = 332.28 × 201.72
  4. Step 4: Simplify right side
    222.16x = 67,027.52
  5. Step 5: Solve for x
    x = 67,027.52/222.16
  6. Step 6: Final answer
    x = 301.71

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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.