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Finding the Third Proportional to 370.69 and 870.19

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Solution

The third proportional to 370.69 and 870.19 is: 2,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.69 : 870.19 = 870.19 : x
  2. Step 2: Convert to fraction form
    370.69/870.19 = 870.19/x
  3. Step 3: Cross multiply
    370.69x = 870.19 × 870.19
  4. Step 4: Simplify right side
    370.69x = 757,226.29
  5. Step 5: Solve for x
    x = 757,226.29/370.69
  6. Step 6: Final answer
    x = 2,042.76

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.