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Finding the Third Proportional to 377.81 and 790.69

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Solution

The third proportional to 377.81 and 790.69 is: 1,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.81 : 790.69 = 790.69 : x
  2. Step 2: Convert to fraction form
    377.81/790.69 = 790.69/x
  3. Step 3: Cross multiply
    377.81x = 790.69 × 790.69
  4. Step 4: Simplify right side
    377.81x = 625,186.72
  5. Step 5: Solve for x
    x = 625,186.72/377.81
  6. Step 6: Final answer
    x = 1,654.75

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.