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Finding the Fourth Proportional to 351.33, 527.69 and 221.57

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Solution

The fourth proportional to 351.33, 527.69 and 221.57 is: 332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.33 : 527.69 = 221.57 : x
  2. Step 2: Convert to fraction form
    351.33/527.69 = 221.57/x
  3. Step 3: Cross multiply
    351.33x = 527.69 × 221.57
  4. Step 4: Simplify right side
    351.33x = 116,916.53
  5. Step 5: Solve for x
    x = 116,916.53/351.33
  6. Step 6: Final answer
    x = 332.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.