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Finding the Fourth Proportional to 527.25, 727.71 and 306.27

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Solution

The fourth proportional to 527.25, 727.71 and 306.27 is: 422.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.25 : 727.71 = 306.27 : x
  2. Step 2: Convert to fraction form
    527.25/727.71 = 306.27/x
  3. Step 3: Cross multiply
    527.25x = 727.71 × 306.27
  4. Step 4: Simplify right side
    527.25x = 222,875.74
  5. Step 5: Solve for x
    x = 222,875.74/527.25
  6. Step 6: Final answer
    x = 422.71

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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.