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Finding the Fourth Proportional to 226.44, 308.57 and 221.45

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Solution

The fourth proportional to 226.44, 308.57 and 221.45 is: 301.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.44 : 308.57 = 221.45 : x
  2. Step 2: Convert to fraction form
    226.44/308.57 = 221.45/x
  3. Step 3: Cross multiply
    226.44x = 308.57 × 221.45
  4. Step 4: Simplify right side
    226.44x = 68,330.18
  5. Step 5: Solve for x
    x = 68,330.18/226.44
  6. Step 6: Final answer
    x = 301.76

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.