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Finding the Third Proportional to 131.06 and 211.03

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Solution

The third proportional to 131.06 and 211.03 is: 339.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.06 : 211.03 = 211.03 : x
  2. Step 2: Convert to fraction form
    131.06/211.03 = 211.03/x
  3. Step 3: Cross multiply
    131.06x = 211.03 × 211.03
  4. Step 4: Simplify right side
    131.06x = 44,534.19
  5. Step 5: Solve for x
    x = 44,534.19/131.06
  6. Step 6: Final answer
    x = 339.79

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.