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Finding the Third Proportional to 315.38 and 807.94

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Solution

The third proportional to 315.38 and 807.94 is: 2,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.38 : 807.94 = 807.94 : x
  2. Step 2: Convert to fraction form
    315.38/807.94 = 807.94/x
  3. Step 3: Cross multiply
    315.38x = 807.94 × 807.94
  4. Step 4: Simplify right side
    315.38x = 652,763.00
  5. Step 5: Solve for x
    x = 652,763.00/315.38
  6. Step 6: Final answer
    x = 2,069.80

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Why These Related Problems?

These problems maintain the same ratio (2.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.