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Finding the Fourth Proportional to 665.20, 996.16 and 376.32

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Solution

The fourth proportional to 665.20, 996.16 and 376.32 is: 563.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.20 : 996.16 = 376.32 : x
  2. Step 2: Convert to fraction form
    665.20/996.16 = 376.32/x
  3. Step 3: Cross multiply
    665.20x = 996.16 × 376.32
  4. Step 4: Simplify right side
    665.20x = 374,874.93
  5. Step 5: Solve for x
    x = 374,874.93/665.20
  6. Step 6: Final answer
    x = 563.55

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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.