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Finding the Fourth Proportional to 255.57, 350.04 and 240.61

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Solution

The fourth proportional to 255.57, 350.04 and 240.61 is: 329.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.57 : 350.04 = 240.61 : x
  2. Step 2: Convert to fraction form
    255.57/350.04 = 240.61/x
  3. Step 3: Cross multiply
    255.57x = 350.04 × 240.61
  4. Step 4: Simplify right side
    255.57x = 84,221.35
  5. Step 5: Solve for x
    x = 84,221.35/255.57
  6. Step 6: Final answer
    x = 329.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.