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Finding the Fourth Proportional to 629.08, 943.60 and 355.15

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Solution

The fourth proportional to 629.08, 943.60 and 355.15 is: 532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.08 : 943.60 = 355.15 : x
  2. Step 2: Convert to fraction form
    629.08/943.60 = 355.15/x
  3. Step 3: Cross multiply
    629.08x = 943.60 × 355.15
  4. Step 4: Simplify right side
    629.08x = 335,119.54
  5. Step 5: Solve for x
    x = 335,119.54/629.08
  6. Step 6: Final answer
    x = 532.71

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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.