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Finding the Fourth Proportional to 663.26, 993.98 and 251.99

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Solution

The fourth proportional to 663.26, 993.98 and 251.99 is: 377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.26 : 993.98 = 251.99 : x
  2. Step 2: Convert to fraction form
    663.26/993.98 = 251.99/x
  3. Step 3: Cross multiply
    663.26x = 993.98 × 251.99
  4. Step 4: Simplify right side
    663.26x = 250,466.79
  5. Step 5: Solve for x
    x = 250,466.79/663.26
  6. Step 6: Final answer
    x = 377.63

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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.