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Finding the Fourth Proportional to 291.99, 404.77 and 273.36

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Solution

The fourth proportional to 291.99, 404.77 and 273.36 is: 378.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.99 : 404.77 = 273.36 : x
  2. Step 2: Convert to fraction form
    291.99/404.77 = 273.36/x
  3. Step 3: Cross multiply
    291.99x = 404.77 × 273.36
  4. Step 4: Simplify right side
    291.99x = 110,647.93
  5. Step 5: Solve for x
    x = 110,647.93/291.99
  6. Step 6: Final answer
    x = 378.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.