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Finding the Fourth Proportional to 249.40, 343.98 and 166.62

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Solution

The fourth proportional to 249.40, 343.98 and 166.62 is: 229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.40 : 343.98 = 166.62 : x
  2. Step 2: Convert to fraction form
    249.40/343.98 = 166.62/x
  3. Step 3: Cross multiply
    249.40x = 343.98 × 166.62
  4. Step 4: Simplify right side
    249.40x = 57,313.95
  5. Step 5: Solve for x
    x = 57,313.95/249.40
  6. Step 6: Final answer
    x = 229.81

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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.