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Finding the Fourth Proportional to 401.30, 601.90 and 108.83

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Solution

The fourth proportional to 401.30, 601.90 and 108.83 is: 163.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.30 : 601.90 = 108.83 : x
  2. Step 2: Convert to fraction form
    401.30/601.90 = 108.83/x
  3. Step 3: Cross multiply
    401.30x = 601.90 × 108.83
  4. Step 4: Simplify right side
    401.30x = 65,502.62
  5. Step 5: Solve for x
    x = 65,502.62/401.30
  6. Step 6: Final answer
    x = 163.22

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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.