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Finding the Fourth Proportional to 636.39, 954.55 and 225.53

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Solution

The fourth proportional to 636.39, 954.55 and 225.53 is: 338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.39 : 954.55 = 225.53 : x
  2. Step 2: Convert to fraction form
    636.39/954.55 = 225.53/x
  3. Step 3: Cross multiply
    636.39x = 954.55 × 225.53
  4. Step 4: Simplify right side
    636.39x = 215,279.66
  5. Step 5: Solve for x
    x = 215,279.66/636.39
  6. Step 6: Final answer
    x = 338.28

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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.