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Finding the Fourth Proportional to 664.07, 996.55 and 298.87

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Solution

The fourth proportional to 664.07, 996.55 and 298.87 is: 448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.07 : 996.55 = 298.87 : x
  2. Step 2: Convert to fraction form
    664.07/996.55 = 298.87/x
  3. Step 3: Cross multiply
    664.07x = 996.55 × 298.87
  4. Step 4: Simplify right side
    664.07x = 297,835.66
  5. Step 5: Solve for x
    x = 297,835.66/664.07
  6. Step 6: Final answer
    x = 448.50

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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.