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Finding the Fourth Proportional to 629.39, 944.02 and 167.21

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Solution

The fourth proportional to 629.39, 944.02 and 167.21 is: 250.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.39 : 944.02 = 167.21 : x
  2. Step 2: Convert to fraction form
    629.39/944.02 = 167.21/x
  3. Step 3: Cross multiply
    629.39x = 944.02 × 167.21
  4. Step 4: Simplify right side
    629.39x = 157,853.22
  5. Step 5: Solve for x
    x = 157,853.22/629.39
  6. Step 6: Final answer
    x = 250.80

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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.