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Finding the Fourth Proportional to 527.82, 791.37 and 345.30

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Solution

The fourth proportional to 527.82, 791.37 and 345.30 is: 517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.82 : 791.37 = 345.30 : x
  2. Step 2: Convert to fraction form
    527.82/791.37 = 345.30/x
  3. Step 3: Cross multiply
    527.82x = 791.37 × 345.30
  4. Step 4: Simplify right side
    527.82x = 273,260.06
  5. Step 5: Solve for x
    x = 273,260.06/527.82
  6. Step 6: Final answer
    x = 517.71

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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.