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Finding the Fourth Proportional to 636.62, 954.99 and 220.23

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Solution

The fourth proportional to 636.62, 954.99 and 220.23 is: 330.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.62 : 954.99 = 220.23 : x
  2. Step 2: Convert to fraction form
    636.62/954.99 = 220.23/x
  3. Step 3: Cross multiply
    636.62x = 954.99 × 220.23
  4. Step 4: Simplify right side
    636.62x = 210,317.45
  5. Step 5: Solve for x
    x = 210,317.45/636.62
  6. Step 6: Final answer
    x = 330.37

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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.