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Finding the Third Proportional to 347.88 and 764.13

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Solution

The third proportional to 347.88 and 764.13 is: 1,678.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.88 : 764.13 = 764.13 : x
  2. Step 2: Convert to fraction form
    347.88/764.13 = 764.13/x
  3. Step 3: Cross multiply
    347.88x = 764.13 × 764.13
  4. Step 4: Simplify right side
    347.88x = 583,887.02
  5. Step 5: Solve for x
    x = 583,887.02/347.88
  6. Step 6: Final answer
    x = 1,678.44

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.