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Finding the Fourth Proportional to 227.91, 341 and 138.53

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Solution

The fourth proportional to 227.91, 341 and 138.53 is: 207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.91 : 341 = 138.53 : x
  2. Step 2: Convert to fraction form
    227.91/341 = 138.53/x
  3. Step 3: Cross multiply
    227.91x = 341 × 138.53
  4. Step 4: Simplify right side
    227.91x = 47,238.73
  5. Step 5: Solve for x
    x = 47,238.73/227.91
  6. Step 6: Final answer
    x = 207.27

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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.