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Finding the Third Proportional to 713 and 771.50

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Solution

The third proportional to 713 and 771.50 is: 834.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    713 : 771.50 = 771.50 : x
  2. Step 2: Convert to fraction form
    713/771.50 = 771.50/x
  3. Step 3: Cross multiply
    713x = 771.50 × 771.50
  4. Step 4: Simplify right side
    713x = 595,212.25
  5. Step 5: Solve for x
    x = 595,212.25/713
  6. Step 6: Final answer
    x = 834.80

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.