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Finding the Fourth Proportional to 636.53, 955.05 and 225.71

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Solution

The fourth proportional to 636.53, 955.05 and 225.71 is: 338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.53 : 955.05 = 225.71 : x
  2. Step 2: Convert to fraction form
    636.53/955.05 = 225.71/x
  3. Step 3: Cross multiply
    636.53x = 955.05 × 225.71
  4. Step 4: Simplify right side
    636.53x = 215,564.34
  5. Step 5: Solve for x
    x = 215,564.34/636.53
  6. Step 6: Final answer
    x = 338.66

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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.