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Finding the Fourth Proportional to 226.34, 311.56 and 197.18

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Solution

The fourth proportional to 226.34, 311.56 and 197.18 is: 271.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.34 : 311.56 = 197.18 : x
  2. Step 2: Convert to fraction form
    226.34/311.56 = 197.18/x
  3. Step 3: Cross multiply
    226.34x = 311.56 × 197.18
  4. Step 4: Simplify right side
    226.34x = 61,432.52
  5. Step 5: Solve for x
    x = 61,432.52/226.34
  6. Step 6: Final answer
    x = 271.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.