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Finding the Fourth Proportional to 529.56, 793.65 and 220.98

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Solution

The fourth proportional to 529.56, 793.65 and 220.98 is: 331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.56 : 793.65 = 220.98 : x
  2. Step 2: Convert to fraction form
    529.56/793.65 = 220.98/x
  3. Step 3: Cross multiply
    529.56x = 793.65 × 220.98
  4. Step 4: Simplify right side
    529.56x = 175,380.78
  5. Step 5: Solve for x
    x = 175,380.78/529.56
  6. Step 6: Final answer
    x = 331.18

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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.