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Finding the Fourth Proportional to 683.91, 1,025.82 and 337.16

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Solution

The fourth proportional to 683.91, 1,025.82 and 337.16 is: 505.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.91 : 1,025.82 = 337.16 : x
  2. Step 2: Convert to fraction form
    683.91/1,025.82 = 337.16/x
  3. Step 3: Cross multiply
    683.91x = 1,025.82 × 337.16
  4. Step 4: Simplify right side
    683.91x = 345,860.34
  5. Step 5: Solve for x
    x = 345,860.34/683.91
  6. Step 6: Final answer
    x = 505.71

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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.