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Finding the Fourth Proportional to 320.81, 481.17 and 227.87

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Solution

The fourth proportional to 320.81, 481.17 and 227.87 is: 341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.81 : 481.17 = 227.87 : x
  2. Step 2: Convert to fraction form
    320.81/481.17 = 227.87/x
  3. Step 3: Cross multiply
    320.81x = 481.17 × 227.87
  4. Step 4: Simplify right side
    320.81x = 109,644.21
  5. Step 5: Solve for x
    x = 109,644.21/320.81
  6. Step 6: Final answer
    x = 341.77

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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.