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Finding the Fourth Proportional to 664.19, 996.08 and 299.15

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Solution

The fourth proportional to 664.19, 996.08 and 299.15 is: 448.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.19 : 996.08 = 299.15 : x
  2. Step 2: Convert to fraction form
    664.19/996.08 = 299.15/x
  3. Step 3: Cross multiply
    664.19x = 996.08 × 299.15
  4. Step 4: Simplify right side
    664.19x = 297,970.86
  5. Step 5: Solve for x
    x = 297,970.86/664.19
  6. Step 6: Final answer
    x = 448.63

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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.