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Finding the Fourth Proportional to 323.44, 443.44 and 317.60

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Solution

The fourth proportional to 323.44, 443.44 and 317.60 is: 435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.44 : 443.44 = 317.60 : x
  2. Step 2: Convert to fraction form
    323.44/443.44 = 317.60/x
  3. Step 3: Cross multiply
    323.44x = 443.44 × 317.60
  4. Step 4: Simplify right side
    323.44x = 140,836.54
  5. Step 5: Solve for x
    x = 140,836.54/323.44
  6. Step 6: Final answer
    x = 435.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.