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Finding the Fourth Proportional to 248.92, 345.07 and 235.74

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Solution

The fourth proportional to 248.92, 345.07 and 235.74 is: 326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.92 : 345.07 = 235.74 : x
  2. Step 2: Convert to fraction form
    248.92/345.07 = 235.74/x
  3. Step 3: Cross multiply
    248.92x = 345.07 × 235.74
  4. Step 4: Simplify right side
    248.92x = 81,348.39
  5. Step 5: Solve for x
    x = 81,348.39/248.92
  6. Step 6: Final answer
    x = 326.81

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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.