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Finding the Fourth Proportional to 629.92, 944.38 and 305.36

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Solution

The fourth proportional to 629.92, 944.38 and 305.36 is: 457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.92 : 944.38 = 305.36 : x
  2. Step 2: Convert to fraction form
    629.92/944.38 = 305.36/x
  3. Step 3: Cross multiply
    629.92x = 944.38 × 305.36
  4. Step 4: Simplify right side
    629.92x = 288,375.88
  5. Step 5: Solve for x
    x = 288,375.88/629.92
  6. Step 6: Final answer
    x = 457.80

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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.