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Finding the Fourth Proportional to 403.85, 605.09 and 184.12

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Solution

The fourth proportional to 403.85, 605.09 and 184.12 is: 275.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.85 : 605.09 = 184.12 : x
  2. Step 2: Convert to fraction form
    403.85/605.09 = 184.12/x
  3. Step 3: Cross multiply
    403.85x = 605.09 × 184.12
  4. Step 4: Simplify right side
    403.85x = 111,408.12
  5. Step 5: Solve for x
    x = 111,408.12/403.85
  6. Step 6: Final answer
    x = 275.86

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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.