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Finding the Third Proportional to 656.63 and 1,343.63

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Solution

The third proportional to 656.63 and 1,343.63 is: 2,749.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.63 : 1,343.63 = 1,343.63 : x
  2. Step 2: Convert to fraction form
    656.63/1,343.63 = 1,343.63/x
  3. Step 3: Cross multiply
    656.63x = 1,343.63 × 1,343.63
  4. Step 4: Simplify right side
    656.63x = 1,805,328.14
  5. Step 5: Solve for x
    x = 1,805,328.14/656.63
  6. Step 6: Final answer
    x = 2,749.41

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.