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Finding the Fourth Proportional to 629.64, 944.84 and 239.70

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Solution

The fourth proportional to 629.64, 944.84 and 239.70 is: 359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.64 : 944.84 = 239.70 : x
  2. Step 2: Convert to fraction form
    629.64/944.84 = 239.70/x
  3. Step 3: Cross multiply
    629.64x = 944.84 × 239.70
  4. Step 4: Simplify right side
    629.64x = 226,478.15
  5. Step 5: Solve for x
    x = 226,478.15/629.64
  6. Step 6: Final answer
    x = 359.69

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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.