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Finding the Fourth Proportional to 383.54, 574.92 and 331.27

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Solution

The fourth proportional to 383.54, 574.92 and 331.27 is: 496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.54 : 574.92 = 331.27 : x
  2. Step 2: Convert to fraction form
    383.54/574.92 = 331.27/x
  3. Step 3: Cross multiply
    383.54x = 574.92 × 331.27
  4. Step 4: Simplify right side
    383.54x = 190,452.31
  5. Step 5: Solve for x
    x = 190,452.31/383.54
  6. Step 6: Final answer
    x = 496.57

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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.