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Finding the Third Proportional to 200.44 and 279.84

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Solution

The third proportional to 200.44 and 279.84 is: 390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.44 : 279.84 = 279.84 : x
  2. Step 2: Convert to fraction form
    200.44/279.84 = 279.84/x
  3. Step 3: Cross multiply
    200.44x = 279.84 × 279.84
  4. Step 4: Simplify right side
    200.44x = 78,312.52
  5. Step 5: Solve for x
    x = 78,312.52/200.44
  6. Step 6: Final answer
    x = 390.71

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.