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Finding the Fourth Proportional to 401.08, 601.62 and 112.52

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Solution

The fourth proportional to 401.08, 601.62 and 112.52 is: 168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.08 : 601.62 = 112.52 : x
  2. Step 2: Convert to fraction form
    401.08/601.62 = 112.52/x
  3. Step 3: Cross multiply
    401.08x = 601.62 × 112.52
  4. Step 4: Simplify right side
    401.08x = 67,694.28
  5. Step 5: Solve for x
    x = 67,694.28/401.08
  6. Step 6: Final answer
    x = 168.78

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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.