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Finding the Fourth Proportional to 357.31, 535.87 and 227.12

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Solution

The fourth proportional to 357.31, 535.87 and 227.12 is: 340.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.31 : 535.87 = 227.12 : x
  2. Step 2: Convert to fraction form
    357.31/535.87 = 227.12/x
  3. Step 3: Cross multiply
    357.31x = 535.87 × 227.12
  4. Step 4: Simplify right side
    357.31x = 121,702.98
  5. Step 5: Solve for x
    x = 121,702.98/357.31
  6. Step 6: Final answer
    x = 340.61

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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.