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Finding the Fourth Proportional to 251.69, 377.77 and 159.43

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Solution

The fourth proportional to 251.69, 377.77 and 159.43 is: 239.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.69 : 377.77 = 159.43 : x
  2. Step 2: Convert to fraction form
    251.69/377.77 = 159.43/x
  3. Step 3: Cross multiply
    251.69x = 377.77 × 159.43
  4. Step 4: Simplify right side
    251.69x = 60,227.87
  5. Step 5: Solve for x
    x = 60,227.87/251.69
  6. Step 6: Final answer
    x = 239.29

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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.