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Finding the Fourth Proportional to 255.82, 353.07 and 193.55

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Solution

The fourth proportional to 255.82, 353.07 and 193.55 is: 267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.82 : 353.07 = 193.55 : x
  2. Step 2: Convert to fraction form
    255.82/353.07 = 193.55/x
  3. Step 3: Cross multiply
    255.82x = 353.07 × 193.55
  4. Step 4: Simplify right side
    255.82x = 68,336.70
  5. Step 5: Solve for x
    x = 68,336.70/255.82
  6. Step 6: Final answer
    x = 267.13

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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.