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Finding the Fourth Proportional to 226.56, 339.24 and 197.40

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Solution

The fourth proportional to 226.56, 339.24 and 197.40 is: 295.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.56 : 339.24 = 197.40 : x
  2. Step 2: Convert to fraction form
    226.56/339.24 = 197.40/x
  3. Step 3: Cross multiply
    226.56x = 339.24 × 197.40
  4. Step 4: Simplify right side
    226.56x = 66,965.98
  5. Step 5: Solve for x
    x = 66,965.98/226.56
  6. Step 6: Final answer
    x = 295.58

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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.