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Finding the Fourth Proportional to 630.44, 944.18 and 321.54

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Solution

The fourth proportional to 630.44, 944.18 and 321.54 is: 481.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.44 : 944.18 = 321.54 : x
  2. Step 2: Convert to fraction form
    630.44/944.18 = 321.54/x
  3. Step 3: Cross multiply
    630.44x = 944.18 × 321.54
  4. Step 4: Simplify right side
    630.44x = 303,591.64
  5. Step 5: Solve for x
    x = 303,591.64/630.44
  6. Step 6: Final answer
    x = 481.56

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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.