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Finding the Fourth Proportional to 490.05, 735.39 and 216.23

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Solution

The fourth proportional to 490.05, 735.39 and 216.23 is: 324.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.05 : 735.39 = 216.23 : x
  2. Step 2: Convert to fraction form
    490.05/735.39 = 216.23/x
  3. Step 3: Cross multiply
    490.05x = 735.39 × 216.23
  4. Step 4: Simplify right side
    490.05x = 159,009.70
  5. Step 5: Solve for x
    x = 159,009.70/490.05
  6. Step 6: Final answer
    x = 324.48

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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.