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Finding the Fourth Proportional to 1,996.32, 2,994.14 and 763.40

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Solution

The fourth proportional to 1,996.32, 2,994.14 and 763.40 is: 1,144.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.32 : 2,994.14 = 763.40 : x
  2. Step 2: Convert to fraction form
    1,996.32/2,994.14 = 763.40/x
  3. Step 3: Cross multiply
    1,996.32x = 2,994.14 × 763.40
  4. Step 4: Simplify right side
    1,996.32x = 2,285,725.30
  5. Step 5: Solve for x
    x = 2,285,725.30/1,996.32
  6. Step 6: Final answer
    x = 1,144.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.