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Finding the Fourth Proportional to 664.77, 997.62 and 231.93

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Solution

The fourth proportional to 664.77, 997.62 and 231.93 is: 348.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.77 : 997.62 = 231.93 : x
  2. Step 2: Convert to fraction form
    664.77/997.62 = 231.93/x
  3. Step 3: Cross multiply
    664.77x = 997.62 × 231.93
  4. Step 4: Simplify right side
    664.77x = 231,372.93
  5. Step 5: Solve for x
    x = 231,372.93/664.77
  6. Step 6: Final answer
    x = 348.05

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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.