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Finding the Fourth Proportional to 629.64, 944.40 and 249.30

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Solution

The fourth proportional to 629.64, 944.40 and 249.30 is: 373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.64 : 944.40 = 249.30 : x
  2. Step 2: Convert to fraction form
    629.64/944.40 = 249.30/x
  3. Step 3: Cross multiply
    629.64x = 944.40 × 249.30
  4. Step 4: Simplify right side
    629.64x = 235,438.92
  5. Step 5: Solve for x
    x = 235,438.92/629.64
  6. Step 6: Final answer
    x = 373.93

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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.