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Finding the Fourth Proportional to 664.93, 997.38 and 177.98

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Solution

The fourth proportional to 664.93, 997.38 and 177.98 is: 266.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.93 : 997.38 = 177.98 : x
  2. Step 2: Convert to fraction form
    664.93/997.38 = 177.98/x
  3. Step 3: Cross multiply
    664.93x = 997.38 × 177.98
  4. Step 4: Simplify right side
    664.93x = 177,508.71
  5. Step 5: Solve for x
    x = 177,508.71/664.93
  6. Step 6: Final answer
    x = 266.96

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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.