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Finding the Fourth Proportional to 318.44, 439.36 and 200.41

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Solution

The fourth proportional to 318.44, 439.36 and 200.41 is: 276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.44 : 439.36 = 200.41 : x
  2. Step 2: Convert to fraction form
    318.44/439.36 = 200.41/x
  3. Step 3: Cross multiply
    318.44x = 439.36 × 200.41
  4. Step 4: Simplify right side
    318.44x = 88,050.54
  5. Step 5: Solve for x
    x = 88,050.54/318.44
  6. Step 6: Final answer
    x = 276.50

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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.