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Finding the Fourth Proportional to 255.45, 352.54 and 144.96

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Solution

The fourth proportional to 255.45, 352.54 and 144.96 is: 200.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.45 : 352.54 = 144.96 : x
  2. Step 2: Convert to fraction form
    255.45/352.54 = 144.96/x
  3. Step 3: Cross multiply
    255.45x = 352.54 × 144.96
  4. Step 4: Simplify right side
    255.45x = 51,103.72
  5. Step 5: Solve for x
    x = 51,103.72/255.45
  6. Step 6: Final answer
    x = 200.06

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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.