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Finding the Fourth Proportional to 255.26, 351.99 and 229.43

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Solution

The fourth proportional to 255.26, 351.99 and 229.43 is: 316.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.26 : 351.99 = 229.43 : x
  2. Step 2: Convert to fraction form
    255.26/351.99 = 229.43/x
  3. Step 3: Cross multiply
    255.26x = 351.99 × 229.43
  4. Step 4: Simplify right side
    255.26x = 80,755.31
  5. Step 5: Solve for x
    x = 80,755.31/255.26
  6. Step 6: Final answer
    x = 316.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.