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Finding the Fourth Proportional to 1,231.32, 1,847.25 and 683.22

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Solution

The fourth proportional to 1,231.32, 1,847.25 and 683.22 is: 1,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.32 : 1,847.25 = 683.22 : x
  2. Step 2: Convert to fraction form
    1,231.32/1,847.25 = 683.22/x
  3. Step 3: Cross multiply
    1,231.32x = 1,847.25 × 683.22
  4. Step 4: Simplify right side
    1,231.32x = 1,262,078.15
  5. Step 5: Solve for x
    x = 1,262,078.15/1,231.32
  6. Step 6: Final answer
    x = 1,024.98

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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.