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Finding the Fourth Proportional to 552.44, 828.62 and 398.64

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Solution

The fourth proportional to 552.44, 828.62 and 398.64 is: 597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.44 : 828.62 = 398.64 : x
  2. Step 2: Convert to fraction form
    552.44/828.62 = 398.64/x
  3. Step 3: Cross multiply
    552.44x = 828.62 × 398.64
  4. Step 4: Simplify right side
    552.44x = 330,319.08
  5. Step 5: Solve for x
    x = 330,319.08/552.44
  6. Step 6: Final answer
    x = 597.93

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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.