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Finding the Fourth Proportional to 664.47, 996.03 and 458.37

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Solution

The fourth proportional to 664.47, 996.03 and 458.37 is: 687.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.47 : 996.03 = 458.37 : x
  2. Step 2: Convert to fraction form
    664.47/996.03 = 458.37/x
  3. Step 3: Cross multiply
    664.47x = 996.03 × 458.37
  4. Step 4: Simplify right side
    664.47x = 456,550.27
  5. Step 5: Solve for x
    x = 456,550.27/664.47
  6. Step 6: Final answer
    x = 687.09

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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.