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Finding the Fourth Proportional to 629.03, 868.07 and 380.31

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Solution

The fourth proportional to 629.03, 868.07 and 380.31 is: 524.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.03 : 868.07 = 380.31 : x
  2. Step 2: Convert to fraction form
    629.03/868.07 = 380.31/x
  3. Step 3: Cross multiply
    629.03x = 868.07 × 380.31
  4. Step 4: Simplify right side
    629.03x = 330,132.86
  5. Step 5: Solve for x
    x = 330,132.86/629.03
  6. Step 6: Final answer
    x = 524.83

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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.