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Finding the Fourth Proportional to 527.87, 791.26 and 219.58

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Solution

The fourth proportional to 527.87, 791.26 and 219.58 is: 329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.87 : 791.26 = 219.58 : x
  2. Step 2: Convert to fraction form
    527.87/791.26 = 219.58/x
  3. Step 3: Cross multiply
    527.87x = 791.26 × 219.58
  4. Step 4: Simplify right side
    527.87x = 173,744.87
  5. Step 5: Solve for x
    x = 173,744.87/527.87
  6. Step 6: Final answer
    x = 329.14

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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.