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Finding the Third Proportional to 381.75 and 750.56

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Solution

The third proportional to 381.75 and 750.56 is: 1,475.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.75 : 750.56 = 750.56 : x
  2. Step 2: Convert to fraction form
    381.75/750.56 = 750.56/x
  3. Step 3: Cross multiply
    381.75x = 750.56 × 750.56
  4. Step 4: Simplify right side
    381.75x = 563,344.07
  5. Step 5: Solve for x
    x = 563,344.07/381.75
  6. Step 6: Final answer
    x = 1,475.69

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.