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Finding the Fourth Proportional to 424.97, 636.84 and 181.43

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Solution

The fourth proportional to 424.97, 636.84 and 181.43 is: 271.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.97 : 636.84 = 181.43 : x
  2. Step 2: Convert to fraction form
    424.97/636.84 = 181.43/x
  3. Step 3: Cross multiply
    424.97x = 636.84 × 181.43
  4. Step 4: Simplify right side
    424.97x = 115,541.88
  5. Step 5: Solve for x
    x = 115,541.88/424.97
  6. Step 6: Final answer
    x = 271.88

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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.