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Finding the Fourth Proportional to 293.90, 404.60 and 255.09

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Solution

The fourth proportional to 293.90, 404.60 and 255.09 is: 351.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.90 : 404.60 = 255.09 : x
  2. Step 2: Convert to fraction form
    293.90/404.60 = 255.09/x
  3. Step 3: Cross multiply
    293.90x = 404.60 × 255.09
  4. Step 4: Simplify right side
    293.90x = 103,208.03
  5. Step 5: Solve for x
    x = 103,208.03/293.90
  6. Step 6: Final answer
    x = 351.17

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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.