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Finding the Fourth Proportional to 552.74, 828.98 and 206.11

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Solution

The fourth proportional to 552.74, 828.98 and 206.11 is: 309.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.74 : 828.98 = 206.11 : x
  2. Step 2: Convert to fraction form
    552.74/828.98 = 206.11/x
  3. Step 3: Cross multiply
    552.74x = 828.98 × 206.11
  4. Step 4: Simplify right side
    552.74x = 170,855.89
  5. Step 5: Solve for x
    x = 170,855.89/552.74
  6. Step 6: Final answer
    x = 309.11

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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.