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Finding the Fourth Proportional to 1,330.92, 1,837 and 800.12

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Solution

The fourth proportional to 1,330.92, 1,837 and 800.12 is: 1,104.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.92 : 1,837 = 800.12 : x
  2. Step 2: Convert to fraction form
    1,330.92/1,837 = 800.12/x
  3. Step 3: Cross multiply
    1,330.92x = 1,837 × 800.12
  4. Step 4: Simplify right side
    1,330.92x = 1,469,820.44
  5. Step 5: Solve for x
    x = 1,469,820.44/1,330.92
  6. Step 6: Final answer
    x = 1,104.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.