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Finding the Fourth Proportional to 259.26, 388.44 and 226.38

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Solution

The fourth proportional to 259.26, 388.44 and 226.38 is: 339.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.26 : 388.44 = 226.38 : x
  2. Step 2: Convert to fraction form
    259.26/388.44 = 226.38/x
  3. Step 3: Cross multiply
    259.26x = 388.44 × 226.38
  4. Step 4: Simplify right side
    259.26x = 87,935.05
  5. Step 5: Solve for x
    x = 87,935.05/259.26
  6. Step 6: Final answer
    x = 339.18

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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.