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Finding the Fourth Proportional to 629.63, 868.82 and 367.73

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Solution

The fourth proportional to 629.63, 868.82 and 367.73 is: 507.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.63 : 868.82 = 367.73 : x
  2. Step 2: Convert to fraction form
    629.63/868.82 = 367.73/x
  3. Step 3: Cross multiply
    629.63x = 868.82 × 367.73
  4. Step 4: Simplify right side
    629.63x = 319,491.18
  5. Step 5: Solve for x
    x = 319,491.18/629.63
  6. Step 6: Final answer
    x = 507.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.