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Finding the Fourth Proportional to 629.37, 945.27 and 447.12

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Solution

The fourth proportional to 629.37, 945.27 and 447.12 is: 671.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.37 : 945.27 = 447.12 : x
  2. Step 2: Convert to fraction form
    629.37/945.27 = 447.12/x
  3. Step 3: Cross multiply
    629.37x = 945.27 × 447.12
  4. Step 4: Simplify right side
    629.37x = 422,649.12
  5. Step 5: Solve for x
    x = 422,649.12/629.37
  6. Step 6: Final answer
    x = 671.54

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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.