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Finding the Fourth Proportional to 395.56, 545.92 and 227.58

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Solution

The fourth proportional to 395.56, 545.92 and 227.58 is: 314.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.56 : 545.92 = 227.58 : x
  2. Step 2: Convert to fraction form
    395.56/545.92 = 227.58/x
  3. Step 3: Cross multiply
    395.56x = 545.92 × 227.58
  4. Step 4: Simplify right side
    395.56x = 124,240.47
  5. Step 5: Solve for x
    x = 124,240.47/395.56
  6. Step 6: Final answer
    x = 314.09

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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.