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Finding the Third Proportional to 477.84 and 850.78

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Solution

The third proportional to 477.84 and 850.78 is: 1,514.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.84 : 850.78 = 850.78 : x
  2. Step 2: Convert to fraction form
    477.84/850.78 = 850.78/x
  3. Step 3: Cross multiply
    477.84x = 850.78 × 850.78
  4. Step 4: Simplify right side
    477.84x = 723,828.74
  5. Step 5: Solve for x
    x = 723,828.74/477.84
  6. Step 6: Final answer
    x = 1,514.78

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.