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Finding the Fourth Proportional to 636.09, 953.22 and 361.60

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Solution

The fourth proportional to 636.09, 953.22 and 361.60 is: 541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.09 : 953.22 = 361.60 : x
  2. Step 2: Convert to fraction form
    636.09/953.22 = 361.60/x
  3. Step 3: Cross multiply
    636.09x = 953.22 × 361.60
  4. Step 4: Simplify right side
    636.09x = 344,677.78
  5. Step 5: Solve for x
    x = 344,677.78/636.09
  6. Step 6: Final answer
    x = 541.87

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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.