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Finding the Fourth Proportional to 552.58, 828.88 and 449.61

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Solution

The fourth proportional to 552.58, 828.88 and 449.61 is: 674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.58 : 828.88 = 449.61 : x
  2. Step 2: Convert to fraction form
    552.58/828.88 = 449.61/x
  3. Step 3: Cross multiply
    552.58x = 828.88 × 449.61
  4. Step 4: Simplify right side
    552.58x = 372,672.74
  5. Step 5: Solve for x
    x = 372,672.74/552.58
  6. Step 6: Final answer
    x = 674.42

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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.