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Finding the Fourth Proportional to 527.89, 791.22 and 219.37

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Solution

The fourth proportional to 527.89, 791.22 and 219.37 is: 328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.89 : 791.22 = 219.37 : x
  2. Step 2: Convert to fraction form
    527.89/791.22 = 219.37/x
  3. Step 3: Cross multiply
    527.89x = 791.22 × 219.37
  4. Step 4: Simplify right side
    527.89x = 173,569.93
  5. Step 5: Solve for x
    x = 173,569.93/527.89
  6. Step 6: Final answer
    x = 328.80

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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.