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Finding the Fourth Proportional to 248.32, 340.19 and 239.09

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Solution

The fourth proportional to 248.32, 340.19 and 239.09 is: 327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.32 : 340.19 = 239.09 : x
  2. Step 2: Convert to fraction form
    248.32/340.19 = 239.09/x
  3. Step 3: Cross multiply
    248.32x = 340.19 × 239.09
  4. Step 4: Simplify right side
    248.32x = 81,336.03
  5. Step 5: Solve for x
    x = 81,336.03/248.32
  6. Step 6: Final answer
    x = 327.55

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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.