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Finding the Third Proportional to 414.75 and 770.81

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Solution

The third proportional to 414.75 and 770.81 is: 1,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.75 : 770.81 = 770.81 : x
  2. Step 2: Convert to fraction form
    414.75/770.81 = 770.81/x
  3. Step 3: Cross multiply
    414.75x = 770.81 × 770.81
  4. Step 4: Simplify right side
    414.75x = 594,151.91
  5. Step 5: Solve for x
    x = 594,151.91/414.75
  6. Step 6: Final answer
    x = 1,432.55

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.