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Finding the Fourth Proportional to 694.98, 953.78 and 629.37

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Solution

The fourth proportional to 694.98, 953.78 and 629.37 is: 863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.98 : 953.78 = 629.37 : x
  2. Step 2: Convert to fraction form
    694.98/953.78 = 629.37/x
  3. Step 3: Cross multiply
    694.98x = 953.78 × 629.37
  4. Step 4: Simplify right side
    694.98x = 600,277.37
  5. Step 5: Solve for x
    x = 600,277.37/694.98
  6. Step 6: Final answer
    x = 863.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.