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Finding the Fourth Proportional to 255.28, 350.36 and 248.08

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Solution

The fourth proportional to 255.28, 350.36 and 248.08 is: 340.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.28 : 350.36 = 248.08 : x
  2. Step 2: Convert to fraction form
    255.28/350.36 = 248.08/x
  3. Step 3: Cross multiply
    255.28x = 350.36 × 248.08
  4. Step 4: Simplify right side
    255.28x = 86,917.31
  5. Step 5: Solve for x
    x = 86,917.31/255.28
  6. Step 6: Final answer
    x = 340.48

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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.