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Finding the Fourth Proportional to 255.22, 382.98 and 101.26

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Solution

The fourth proportional to 255.22, 382.98 and 101.26 is: 151.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.22 : 382.98 = 101.26 : x
  2. Step 2: Convert to fraction form
    255.22/382.98 = 101.26/x
  3. Step 3: Cross multiply
    255.22x = 382.98 × 101.26
  4. Step 4: Simplify right side
    255.22x = 38,780.55
  5. Step 5: Solve for x
    x = 38,780.55/255.22
  6. Step 6: Final answer
    x = 151.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.