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Finding the Fourth Proportional to 331.91, 458.19 and 227.17

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Solution

The fourth proportional to 331.91, 458.19 and 227.17 is: 313.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.91 : 458.19 = 227.17 : x
  2. Step 2: Convert to fraction form
    331.91/458.19 = 227.17/x
  3. Step 3: Cross multiply
    331.91x = 458.19 × 227.17
  4. Step 4: Simplify right side
    331.91x = 104,083.60
  5. Step 5: Solve for x
    x = 104,083.60/331.91
  6. Step 6: Final answer
    x = 313.59

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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.