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Finding the Fourth Proportional to 226.20, 337.40 and 211.08

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Solution

The fourth proportional to 226.20, 337.40 and 211.08 is: 314.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.20 : 337.40 = 211.08 : x
  2. Step 2: Convert to fraction form
    226.20/337.40 = 211.08/x
  3. Step 3: Cross multiply
    226.20x = 337.40 × 211.08
  4. Step 4: Simplify right side
    226.20x = 71,218.39
  5. Step 5: Solve for x
    x = 71,218.39/226.20
  6. Step 6: Final answer
    x = 314.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.