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Finding the Fourth Proportional to 490.54, 735.82 and 216.62

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Solution

The fourth proportional to 490.54, 735.82 and 216.62 is: 324.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.54 : 735.82 = 216.62 : x
  2. Step 2: Convert to fraction form
    490.54/735.82 = 216.62/x
  3. Step 3: Cross multiply
    490.54x = 735.82 × 216.62
  4. Step 4: Simplify right side
    490.54x = 159,393.33
  5. Step 5: Solve for x
    x = 159,393.33/490.54
  6. Step 6: Final answer
    x = 324.93

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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.