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Finding the Fourth Proportional to 249.60, 343.92 and 235.68

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Solution

The fourth proportional to 249.60, 343.92 and 235.68 is: 324.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.60 : 343.92 = 235.68 : x
  2. Step 2: Convert to fraction form
    249.60/343.92 = 235.68/x
  3. Step 3: Cross multiply
    249.60x = 343.92 × 235.68
  4. Step 4: Simplify right side
    249.60x = 81,055.07
  5. Step 5: Solve for x
    x = 81,055.07/249.60
  6. Step 6: Final answer
    x = 324.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.