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Finding the Fourth Proportional to 219.72, 329.30 and 110

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Solution

The fourth proportional to 219.72, 329.30 and 110 is: 164.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.72 : 329.30 = 110 : x
  2. Step 2: Convert to fraction form
    219.72/329.30 = 110/x
  3. Step 3: Cross multiply
    219.72x = 329.30 × 110
  4. Step 4: Simplify right side
    219.72x = 36,223
  5. Step 5: Solve for x
    x = 36,223/219.72
  6. Step 6: Final answer
    x = 164.86

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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.