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Finding the Fourth Proportional to 636.15, 954.18 and 225.18

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Solution

The fourth proportional to 636.15, 954.18 and 225.18 is: 337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.15 : 954.18 = 225.18 : x
  2. Step 2: Convert to fraction form
    636.15/954.18 = 225.18/x
  3. Step 3: Cross multiply
    636.15x = 954.18 × 225.18
  4. Step 4: Simplify right side
    636.15x = 214,862.25
  5. Step 5: Solve for x
    x = 214,862.25/636.15
  6. Step 6: Final answer
    x = 337.75

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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.