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Finding the Fourth Proportional to 255.79, 350.69 and 251.18

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Solution

The fourth proportional to 255.79, 350.69 and 251.18 is: 344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.79 : 350.69 = 251.18 : x
  2. Step 2: Convert to fraction form
    255.79/350.69 = 251.18/x
  3. Step 3: Cross multiply
    255.79x = 350.69 × 251.18
  4. Step 4: Simplify right side
    255.79x = 88,084.25
  5. Step 5: Solve for x
    x = 88,084.25/255.79
  6. Step 6: Final answer
    x = 344.36

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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.