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Finding the Fourth Proportional to 411.63, 617.44 and 107.63

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Solution

The fourth proportional to 411.63, 617.44 and 107.63 is: 161.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.63 : 617.44 = 107.63 : x
  2. Step 2: Convert to fraction form
    411.63/617.44 = 107.63/x
  3. Step 3: Cross multiply
    411.63x = 617.44 × 107.63
  4. Step 4: Simplify right side
    411.63x = 66,451.71
  5. Step 5: Solve for x
    x = 66,451.71/411.63
  6. Step 6: Final answer
    x = 161.44

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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.