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Finding the Fourth Proportional to 219.53, 329.29 and 57.22

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Solution

The fourth proportional to 219.53, 329.29 and 57.22 is: 85.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.53 : 329.29 = 57.22 : x
  2. Step 2: Convert to fraction form
    219.53/329.29 = 57.22/x
  3. Step 3: Cross multiply
    219.53x = 329.29 × 57.22
  4. Step 4: Simplify right side
    219.53x = 18,841.01
  5. Step 5: Solve for x
    x = 18,841.01/219.53
  6. Step 6: Final answer
    x = 85.83

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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.