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Finding the Fourth Proportional to 404.82, 558.61 and 236.74

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Solution

The fourth proportional to 404.82, 558.61 and 236.74 is: 326.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.82 : 558.61 = 236.74 : x
  2. Step 2: Convert to fraction form
    404.82/558.61 = 236.74/x
  3. Step 3: Cross multiply
    404.82x = 558.61 × 236.74
  4. Step 4: Simplify right side
    404.82x = 132,245.33
  5. Step 5: Solve for x
    x = 132,245.33/404.82
  6. Step 6: Final answer
    x = 326.68

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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.