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Finding the Fourth Proportional to 248.26, 344.75 and 245.86

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Solution

The fourth proportional to 248.26, 344.75 and 245.86 is: 341.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.26 : 344.75 = 245.86 : x
  2. Step 2: Convert to fraction form
    248.26/344.75 = 245.86/x
  3. Step 3: Cross multiply
    248.26x = 344.75 × 245.86
  4. Step 4: Simplify right side
    248.26x = 84,760.24
  5. Step 5: Solve for x
    x = 84,760.24/248.26
  6. Step 6: Final answer
    x = 341.42

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.