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Finding the Fourth Proportional to 552.25, 828.47 and 187.12

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Solution

The fourth proportional to 552.25, 828.47 and 187.12 is: 280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.25 : 828.47 = 187.12 : x
  2. Step 2: Convert to fraction form
    552.25/828.47 = 187.12/x
  3. Step 3: Cross multiply
    552.25x = 828.47 × 187.12
  4. Step 4: Simplify right side
    552.25x = 155,023.31
  5. Step 5: Solve for x
    x = 155,023.31/552.25
  6. Step 6: Final answer
    x = 280.71

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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.