Home / 683.08-1,023.95-272.21

Finding the Fourth Proportional to 683.08, 1,023.95 and 272.21

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Solution

The fourth proportional to 683.08, 1,023.95 and 272.21 is: 408.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.08 : 1,023.95 = 272.21 : x
  2. Step 2: Convert to fraction form
    683.08/1,023.95 = 272.21/x
  3. Step 3: Cross multiply
    683.08x = 1,023.95 × 272.21
  4. Step 4: Simplify right side
    683.08x = 278,724.99
  5. Step 5: Solve for x
    x = 278,724.99/683.08
  6. Step 6: Final answer
    x = 408.04

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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.