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Finding the Fourth Proportional to 2,255.52, 3,380.64 and 956.64

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Solution

The fourth proportional to 2,255.52, 3,380.64 and 956.64 is: 1,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.52 : 3,380.64 = 956.64 : x
  2. Step 2: Convert to fraction form
    2,255.52/3,380.64 = 956.64/x
  3. Step 3: Cross multiply
    2,255.52x = 3,380.64 × 956.64
  4. Step 4: Simplify right side
    2,255.52x = 3,234,055.45
  5. Step 5: Solve for x
    x = 3,234,055.45/2,255.52
  6. Step 6: Final answer
    x = 1,433.84

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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.