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Finding the Fourth Proportional to 441.18, 661.32 and 332.64

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Solution

The fourth proportional to 441.18, 661.32 and 332.64 is: 498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.18 : 661.32 = 332.64 : x
  2. Step 2: Convert to fraction form
    441.18/661.32 = 332.64/x
  3. Step 3: Cross multiply
    441.18x = 661.32 × 332.64
  4. Step 4: Simplify right side
    441.18x = 219,981.48
  5. Step 5: Solve for x
    x = 219,981.48/441.18
  6. Step 6: Final answer
    x = 498.62

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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.