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Finding the Fourth Proportional to 629.33, 944.15 and 218.48

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Solution

The fourth proportional to 629.33, 944.15 and 218.48 is: 327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.33 : 944.15 = 218.48 : x
  2. Step 2: Convert to fraction form
    629.33/944.15 = 218.48/x
  3. Step 3: Cross multiply
    629.33x = 944.15 × 218.48
  4. Step 4: Simplify right side
    629.33x = 206,273.72
  5. Step 5: Solve for x
    x = 206,273.72/629.33
  6. Step 6: Final answer
    x = 327.77

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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.