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Finding the Third Proportional to 699.75 and 770.25

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Solution

The third proportional to 699.75 and 770.25 is: 847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.75 : 770.25 = 770.25 : x
  2. Step 2: Convert to fraction form
    699.75/770.25 = 770.25/x
  3. Step 3: Cross multiply
    699.75x = 770.25 × 770.25
  4. Step 4: Simplify right side
    699.75x = 593,285.06
  5. Step 5: Solve for x
    x = 593,285.06/699.75
  6. Step 6: Final answer
    x = 847.85

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These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.