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Finding the Fourth Proportional to 227.28, 341.52 and 212.70

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Solution

The fourth proportional to 227.28, 341.52 and 212.70 is: 319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.28 : 341.52 = 212.70 : x
  2. Step 2: Convert to fraction form
    227.28/341.52 = 212.70/x
  3. Step 3: Cross multiply
    227.28x = 341.52 × 212.70
  4. Step 4: Simplify right side
    227.28x = 72,641.30
  5. Step 5: Solve for x
    x = 72,641.30/227.28
  6. Step 6: Final answer
    x = 319.61

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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.