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Finding the Fourth Proportional to 683.86, 943.57 and 404.11

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Solution

The fourth proportional to 683.86, 943.57 and 404.11 is: 557.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.86 : 943.57 = 404.11 : x
  2. Step 2: Convert to fraction form
    683.86/943.57 = 404.11/x
  3. Step 3: Cross multiply
    683.86x = 943.57 × 404.11
  4. Step 4: Simplify right side
    683.86x = 381,303.59
  5. Step 5: Solve for x
    x = 381,303.59/683.86
  6. Step 6: Final answer
    x = 557.58

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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.