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Finding the Fourth Proportional to 683.79, 943.82 and 404.07

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Solution

The fourth proportional to 683.79, 943.82 and 404.07 is: 557.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.79 : 943.82 = 404.07 : x
  2. Step 2: Convert to fraction form
    683.79/943.82 = 404.07/x
  3. Step 3: Cross multiply
    683.79x = 943.82 × 404.07
  4. Step 4: Simplify right side
    683.79x = 381,369.35
  5. Step 5: Solve for x
    x = 381,369.35/683.79
  6. Step 6: Final answer
    x = 557.73

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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.