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Finding the Fourth Proportional to 527.76, 791.46 and 185.76

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Solution

The fourth proportional to 527.76, 791.46 and 185.76 is: 278.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.76 : 791.46 = 185.76 : x
  2. Step 2: Convert to fraction form
    527.76/791.46 = 185.76/x
  3. Step 3: Cross multiply
    527.76x = 791.46 × 185.76
  4. Step 4: Simplify right side
    527.76x = 147,021.61
  5. Step 5: Solve for x
    x = 147,021.61/527.76
  6. Step 6: Final answer
    x = 278.58

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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.