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Finding the Fourth Proportional to 629.27, 868.39 and 349.53

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Solution

The fourth proportional to 629.27, 868.39 and 349.53 is: 482.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.27 : 868.39 = 349.53 : x
  2. Step 2: Convert to fraction form
    629.27/868.39 = 349.53/x
  3. Step 3: Cross multiply
    629.27x = 868.39 × 349.53
  4. Step 4: Simplify right side
    629.27x = 303,530.04
  5. Step 5: Solve for x
    x = 303,530.04/629.27
  6. Step 6: Final answer
    x = 482.36

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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.