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Finding the Fourth Proportional to 1,299.92, 1,949.84 and 375.36

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Solution

The fourth proportional to 1,299.92, 1,949.84 and 375.36 is: 563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.92 : 1,949.84 = 375.36 : x
  2. Step 2: Convert to fraction form
    1,299.92/1,949.84 = 375.36/x
  3. Step 3: Cross multiply
    1,299.92x = 1,949.84 × 375.36
  4. Step 4: Simplify right side
    1,299.92x = 731,891.94
  5. Step 5: Solve for x
    x = 731,891.94/1,299.92
  6. Step 6: Final answer
    x = 563.03

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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.