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Finding the Fourth Proportional to 528.92, 793.22 and 220.86

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Solution

The fourth proportional to 528.92, 793.22 and 220.86 is: 331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.92 : 793.22 = 220.86 : x
  2. Step 2: Convert to fraction form
    528.92/793.22 = 220.86/x
  3. Step 3: Cross multiply
    528.92x = 793.22 × 220.86
  4. Step 4: Simplify right side
    528.92x = 175,190.57
  5. Step 5: Solve for x
    x = 175,190.57/528.92
  6. Step 6: Final answer
    x = 331.22

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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.