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Finding the Third Proportional to 835.13 and 1,115.81

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Solution

The third proportional to 835.13 and 1,115.81 is: 1,490.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.13 : 1,115.81 = 1,115.81 : x
  2. Step 2: Convert to fraction form
    835.13/1,115.81 = 1,115.81/x
  3. Step 3: Cross multiply
    835.13x = 1,115.81 × 1,115.81
  4. Step 4: Simplify right side
    835.13x = 1,245,037.54
  5. Step 5: Solve for x
    x = 1,245,037.54/835.13
  6. Step 6: Final answer
    x = 1,490.84

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.