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Finding the Fourth Proportional to 527.43, 791.11 and 219.05

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Solution

The fourth proportional to 527.43, 791.11 and 219.05 is: 328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.43 : 791.11 = 219.05 : x
  2. Step 2: Convert to fraction form
    527.43/791.11 = 219.05/x
  3. Step 3: Cross multiply
    527.43x = 791.11 × 219.05
  4. Step 4: Simplify right side
    527.43x = 173,292.65
  5. Step 5: Solve for x
    x = 173,292.65/527.43
  6. Step 6: Final answer
    x = 328.56

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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.