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Finding the Fourth Proportional to 441.90, 662.28 and 181.61

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Solution

The fourth proportional to 441.90, 662.28 and 181.61 is: 272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.90 : 662.28 = 181.61 : x
  2. Step 2: Convert to fraction form
    441.90/662.28 = 181.61/x
  3. Step 3: Cross multiply
    441.90x = 662.28 × 181.61
  4. Step 4: Simplify right side
    441.90x = 120,276.18
  5. Step 5: Solve for x
    x = 120,276.18/441.90
  6. Step 6: Final answer
    x = 272.18

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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.