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Finding the Fourth Proportional to 400.67, 600.91 and 144.17

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Solution

The fourth proportional to 400.67, 600.91 and 144.17 is: 216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.67 : 600.91 = 144.17 : x
  2. Step 2: Convert to fraction form
    400.67/600.91 = 144.17/x
  3. Step 3: Cross multiply
    400.67x = 600.91 × 144.17
  4. Step 4: Simplify right side
    400.67x = 86,633.19
  5. Step 5: Solve for x
    x = 86,633.19/400.67
  6. Step 6: Final answer
    x = 216.22

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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.