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Finding the Fourth Proportional to 683.67, 943.85 and 609.86

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Solution

The fourth proportional to 683.67, 943.85 and 609.86 is: 841.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.67 : 943.85 = 609.86 : x
  2. Step 2: Convert to fraction form
    683.67/943.85 = 609.86/x
  3. Step 3: Cross multiply
    683.67x = 943.85 × 609.86
  4. Step 4: Simplify right side
    683.67x = 575,620.25
  5. Step 5: Solve for x
    x = 575,620.25/683.67
  6. Step 6: Final answer
    x = 841.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.