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Finding the Fourth Proportional to 637.22, 955.99 and 272.12

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Solution

The fourth proportional to 637.22, 955.99 and 272.12 is: 408.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.22 : 955.99 = 272.12 : x
  2. Step 2: Convert to fraction form
    637.22/955.99 = 272.12/x
  3. Step 3: Cross multiply
    637.22x = 955.99 × 272.12
  4. Step 4: Simplify right side
    637.22x = 260,138.03
  5. Step 5: Solve for x
    x = 260,138.03/637.22
  6. Step 6: Final answer
    x = 408.24

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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.