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Finding the Fourth Proportional to 248.45, 340.37 and 239.22

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Solution

The fourth proportional to 248.45, 340.37 and 239.22 is: 327.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.45 : 340.37 = 239.22 : x
  2. Step 2: Convert to fraction form
    248.45/340.37 = 239.22/x
  3. Step 3: Cross multiply
    248.45x = 340.37 × 239.22
  4. Step 4: Simplify right side
    248.45x = 81,422.12
  5. Step 5: Solve for x
    x = 81,422.12/248.45
  6. Step 6: Final answer
    x = 327.73

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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.