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Finding the Fourth Proportional to 351.43, 527.27 and 221.24

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Solution

The fourth proportional to 351.43, 527.27 and 221.24 is: 331.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.43 : 527.27 = 221.24 : x
  2. Step 2: Convert to fraction form
    351.43/527.27 = 221.24/x
  3. Step 3: Cross multiply
    351.43x = 527.27 × 221.24
  4. Step 4: Simplify right side
    351.43x = 116,653.43
  5. Step 5: Solve for x
    x = 116,653.43/351.43
  6. Step 6: Final answer
    x = 331.94

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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.