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Finding the Third Proportional to 215.44 and 336.09

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Solution

The third proportional to 215.44 and 336.09 is: 524.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.44 : 336.09 = 336.09 : x
  2. Step 2: Convert to fraction form
    215.44/336.09 = 336.09/x
  3. Step 3: Cross multiply
    215.44x = 336.09 × 336.09
  4. Step 4: Simplify right side
    215.44x = 112,959.01
  5. Step 5: Solve for x
    x = 112,959.01/215.44
  6. Step 6: Final answer
    x = 524.32

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.