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Finding the Fourth Proportional to 655.92, 984 and 440.88

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Solution

The fourth proportional to 655.92, 984 and 440.88 is: 661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.92 : 984 = 440.88 : x
  2. Step 2: Convert to fraction form
    655.92/984 = 440.88/x
  3. Step 3: Cross multiply
    655.92x = 984 × 440.88
  4. Step 4: Simplify right side
    655.92x = 433,825.92
  5. Step 5: Solve for x
    x = 433,825.92/655.92
  6. Step 6: Final answer
    x = 661.40

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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.