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Finding the Fourth Proportional to 441.92, 661.92 and 369.20

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Solution

The fourth proportional to 441.92, 661.92 and 369.20 is: 553.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.92 : 661.92 = 369.20 : x
  2. Step 2: Convert to fraction form
    441.92/661.92 = 369.20/x
  3. Step 3: Cross multiply
    441.92x = 661.92 × 369.20
  4. Step 4: Simplify right side
    441.92x = 244,380.86
  5. Step 5: Solve for x
    x = 244,380.86/441.92
  6. Step 6: Final answer
    x = 553.00

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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.