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Finding the Third Proportional to 260.72 and 548.44

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Solution

The third proportional to 260.72 and 548.44 is: 1,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.72 : 548.44 = 548.44 : x
  2. Step 2: Convert to fraction form
    260.72/548.44 = 548.44/x
  3. Step 3: Cross multiply
    260.72x = 548.44 × 548.44
  4. Step 4: Simplify right side
    260.72x = 300,783.69
  5. Step 5: Solve for x
    x = 300,783.69/260.72
  6. Step 6: Final answer
    x = 1,153.67

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.