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Finding the Fourth Proportional to 665.32, 998.16 and 232.48

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Solution

The fourth proportional to 665.32, 998.16 and 232.48 is: 348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.32 : 998.16 = 232.48 : x
  2. Step 2: Convert to fraction form
    665.32/998.16 = 232.48/x
  3. Step 3: Cross multiply
    665.32x = 998.16 × 232.48
  4. Step 4: Simplify right side
    665.32x = 232,052.24
  5. Step 5: Solve for x
    x = 232,052.24/665.32
  6. Step 6: Final answer
    x = 348.78

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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.