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Finding the Fourth Proportional to 227.97, 341.15 and 212.72

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Solution

The fourth proportional to 227.97, 341.15 and 212.72 is: 318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.97 : 341.15 = 212.72 : x
  2. Step 2: Convert to fraction form
    227.97/341.15 = 212.72/x
  3. Step 3: Cross multiply
    227.97x = 341.15 × 212.72
  4. Step 4: Simplify right side
    227.97x = 72,566.66
  5. Step 5: Solve for x
    x = 72,566.66/227.97
  6. Step 6: Final answer
    x = 318.32

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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.