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Finding the Fourth Proportional to 249.95, 345.17 and 236.31

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Solution

The fourth proportional to 249.95, 345.17 and 236.31 is: 326.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.95 : 345.17 = 236.31 : x
  2. Step 2: Convert to fraction form
    249.95/345.17 = 236.31/x
  3. Step 3: Cross multiply
    249.95x = 345.17 × 236.31
  4. Step 4: Simplify right side
    249.95x = 81,567.68
  5. Step 5: Solve for x
    x = 81,567.68/249.95
  6. Step 6: Final answer
    x = 326.34

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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.