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Finding the Third Proportional to 793.50 and 1,245

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Solution

The third proportional to 793.50 and 1,245 is: 1,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.50 : 1,245 = 1,245 : x
  2. Step 2: Convert to fraction form
    793.50/1,245 = 1,245/x
  3. Step 3: Cross multiply
    793.50x = 1,245 × 1,245
  4. Step 4: Simplify right side
    793.50x = 1,550,025
  5. Step 5: Solve for x
    x = 1,550,025/793.50
  6. Step 6: Final answer
    x = 1,953.40

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.