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Finding the Third Proportional to 119.60 and 261.63

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Solution

The third proportional to 119.60 and 261.63 is: 572.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.60 : 261.63 = 261.63 : x
  2. Step 2: Convert to fraction form
    119.60/261.63 = 261.63/x
  3. Step 3: Cross multiply
    119.60x = 261.63 × 261.63
  4. Step 4: Simplify right side
    119.60x = 68,449.43
  5. Step 5: Solve for x
    x = 68,449.43/119.60
  6. Step 6: Final answer
    x = 572.31

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.