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Finding the Fourth Proportional to 1,790.37, 2,685.12 and 694.03

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Solution

The fourth proportional to 1,790.37, 2,685.12 and 694.03 is: 1,040.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.37 : 2,685.12 = 694.03 : x
  2. Step 2: Convert to fraction form
    1,790.37/2,685.12 = 694.03/x
  3. Step 3: Cross multiply
    1,790.37x = 2,685.12 × 694.03
  4. Step 4: Simplify right side
    1,790.37x = 1,863,550.36
  5. Step 5: Solve for x
    x = 1,863,550.36/1,790.37
  6. Step 6: Final answer
    x = 1,040.88

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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.