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Finding the Fourth Proportional to 249.68, 346.17 and 245.43

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Solution

The fourth proportional to 249.68, 346.17 and 245.43 is: 340.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.68 : 346.17 = 245.43 : x
  2. Step 2: Convert to fraction form
    249.68/346.17 = 245.43/x
  3. Step 3: Cross multiply
    249.68x = 346.17 × 245.43
  4. Step 4: Simplify right side
    249.68x = 84,961.42
  5. Step 5: Solve for x
    x = 84,961.42/249.68
  6. Step 6: Final answer
    x = 340.28

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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.