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Finding the Fourth Proportional to 325.31, 449.07 and 227.57

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Solution

The fourth proportional to 325.31, 449.07 and 227.57 is: 314.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.31 : 449.07 = 227.57 : x
  2. Step 2: Convert to fraction form
    325.31/449.07 = 227.57/x
  3. Step 3: Cross multiply
    325.31x = 449.07 × 227.57
  4. Step 4: Simplify right side
    325.31x = 102,194.86
  5. Step 5: Solve for x
    x = 102,194.86/325.31
  6. Step 6: Final answer
    x = 314.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.