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Finding the Fourth Proportional to 527.11, 727.43 and 317.27

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Solution

The fourth proportional to 527.11, 727.43 and 317.27 is: 437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.11 : 727.43 = 317.27 : x
  2. Step 2: Convert to fraction form
    527.11/727.43 = 317.27/x
  3. Step 3: Cross multiply
    527.11x = 727.43 × 317.27
  4. Step 4: Simplify right side
    527.11x = 230,791.95
  5. Step 5: Solve for x
    x = 230,791.95/527.11
  6. Step 6: Final answer
    x = 437.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.