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Finding the Fourth Proportional to 255.82, 352.96 and 145.27

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Solution

The fourth proportional to 255.82, 352.96 and 145.27 is: 200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.82 : 352.96 = 145.27 : x
  2. Step 2: Convert to fraction form
    255.82/352.96 = 145.27/x
  3. Step 3: Cross multiply
    255.82x = 352.96 × 145.27
  4. Step 4: Simplify right side
    255.82x = 51,274.50
  5. Step 5: Solve for x
    x = 51,274.50/255.82
  6. Step 6: Final answer
    x = 200.43

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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.