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Finding the Fourth Proportional to 529.26, 793.92 and 221.05

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Solution

The fourth proportional to 529.26, 793.92 and 221.05 is: 331.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.26 : 793.92 = 221.05 : x
  2. Step 2: Convert to fraction form
    529.26/793.92 = 221.05/x
  3. Step 3: Cross multiply
    529.26x = 793.92 × 221.05
  4. Step 4: Simplify right side
    529.26x = 175,496.02
  5. Step 5: Solve for x
    x = 175,496.02/529.26
  6. Step 6: Final answer
    x = 331.59

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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.