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Finding the Third Proportional to 349 and 488.25

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Solution

The third proportional to 349 and 488.25 is: 683.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    349 : 488.25 = 488.25 : x
  2. Step 2: Convert to fraction form
    349/488.25 = 488.25/x
  3. Step 3: Cross multiply
    349x = 488.25 × 488.25
  4. Step 4: Simplify right side
    349x = 238,388.06
  5. Step 5: Solve for x
    x = 238,388.06/349
  6. Step 6: Final answer
    x = 683.06

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.