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Finding the Fourth Proportional to 629.82, 943.20 and 446.36

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Solution

The fourth proportional to 629.82, 943.20 and 446.36 is: 668.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.82 : 943.20 = 446.36 : x
  2. Step 2: Convert to fraction form
    629.82/943.20 = 446.36/x
  3. Step 3: Cross multiply
    629.82x = 943.20 × 446.36
  4. Step 4: Simplify right side
    629.82x = 421,006.75
  5. Step 5: Solve for x
    x = 421,006.75/629.82
  6. Step 6: Final answer
    x = 668.46

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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.