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Finding the Fourth Proportional to 526.20, 789.26 and 217.96

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Solution

The fourth proportional to 526.20, 789.26 and 217.96 is: 326.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.20 : 789.26 = 217.96 : x
  2. Step 2: Convert to fraction form
    526.20/789.26 = 217.96/x
  3. Step 3: Cross multiply
    526.20x = 789.26 × 217.96
  4. Step 4: Simplify right side
    526.20x = 172,027.11
  5. Step 5: Solve for x
    x = 172,027.11/526.20
  6. Step 6: Final answer
    x = 326.92

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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.