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Finding the Fourth Proportional to 527.64, 727.81 and 331.27

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Solution

The fourth proportional to 527.64, 727.81 and 331.27 is: 456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.64 : 727.81 = 331.27 : x
  2. Step 2: Convert to fraction form
    527.64/727.81 = 331.27/x
  3. Step 3: Cross multiply
    527.64x = 727.81 × 331.27
  4. Step 4: Simplify right side
    527.64x = 241,101.62
  5. Step 5: Solve for x
    x = 241,101.62/527.64
  6. Step 6: Final answer
    x = 456.94

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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.