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Finding the Fourth Proportional to 247.70, 341.49 and 208.82

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Solution

The fourth proportional to 247.70, 341.49 and 208.82 is: 287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.70 : 341.49 = 208.82 : x
  2. Step 2: Convert to fraction form
    247.70/341.49 = 208.82/x
  3. Step 3: Cross multiply
    247.70x = 341.49 × 208.82
  4. Step 4: Simplify right side
    247.70x = 71,309.94
  5. Step 5: Solve for x
    x = 71,309.94/247.70
  6. Step 6: Final answer
    x = 287.89

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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.