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Finding the Third Proportional to 246.75 and 386.63

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Solution

The third proportional to 246.75 and 386.63 is: 605.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.75 : 386.63 = 386.63 : x
  2. Step 2: Convert to fraction form
    246.75/386.63 = 386.63/x
  3. Step 3: Cross multiply
    246.75x = 386.63 × 386.63
  4. Step 4: Simplify right side
    246.75x = 149,478.89
  5. Step 5: Solve for x
    x = 149,478.89/246.75
  6. Step 6: Final answer
    x = 605.79

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.