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Finding the Fourth Proportional to 543.96, 815.97 and 219.35

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Solution

The fourth proportional to 543.96, 815.97 and 219.35 is: 329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.96 : 815.97 = 219.35 : x
  2. Step 2: Convert to fraction form
    543.96/815.97 = 219.35/x
  3. Step 3: Cross multiply
    543.96x = 815.97 × 219.35
  4. Step 4: Simplify right side
    543.96x = 178,983.02
  5. Step 5: Solve for x
    x = 178,983.02/543.96
  6. Step 6: Final answer
    x = 329.04

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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.