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Finding the Third Proportional to 385.69 and 837.19

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Solution

The third proportional to 385.69 and 837.19 is: 1,817.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.69 : 837.19 = 837.19 : x
  2. Step 2: Convert to fraction form
    385.69/837.19 = 837.19/x
  3. Step 3: Cross multiply
    385.69x = 837.19 × 837.19
  4. Step 4: Simplify right side
    385.69x = 700,882.91
  5. Step 5: Solve for x
    x = 700,882.91/385.69
  6. Step 6: Final answer
    x = 1,817.23

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.