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Finding the Fourth Proportional to 1,804.55, 2,704.96 and 693.70

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Solution

The fourth proportional to 1,804.55, 2,704.96 and 693.70 is: 1,039.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,804.55 : 2,704.96 = 693.70 : x
  2. Step 2: Convert to fraction form
    1,804.55/2,704.96 = 693.70/x
  3. Step 3: Cross multiply
    1,804.55x = 2,704.96 × 693.70
  4. Step 4: Simplify right side
    1,804.55x = 1,876,430.75
  5. Step 5: Solve for x
    x = 1,876,430.75/1,804.55
  6. Step 6: Final answer
    x = 1,039.83

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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.