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Finding the Fourth Proportional to 552.18, 828.17 and 205.43

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Solution

The fourth proportional to 552.18, 828.17 and 205.43 is: 308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.18 : 828.17 = 205.43 : x
  2. Step 2: Convert to fraction form
    552.18/828.17 = 205.43/x
  3. Step 3: Cross multiply
    552.18x = 828.17 × 205.43
  4. Step 4: Simplify right side
    552.18x = 170,130.96
  5. Step 5: Solve for x
    x = 170,130.96/552.18
  6. Step 6: Final answer
    x = 308.11

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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.