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Finding the Fourth Proportional to 404.91, 558.90 and 273.92

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Solution

The fourth proportional to 404.91, 558.90 and 273.92 is: 378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.91 : 558.90 = 273.92 : x
  2. Step 2: Convert to fraction form
    404.91/558.90 = 273.92/x
  3. Step 3: Cross multiply
    404.91x = 558.90 × 273.92
  4. Step 4: Simplify right side
    404.91x = 153,091.09
  5. Step 5: Solve for x
    x = 153,091.09/404.91
  6. Step 6: Final answer
    x = 378.09

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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.