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Finding the Fourth Proportional to 552.62, 828.92 and 141.75

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Solution

The fourth proportional to 552.62, 828.92 and 141.75 is: 212.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.62 : 828.92 = 141.75 : x
  2. Step 2: Convert to fraction form
    552.62/828.92 = 141.75/x
  3. Step 3: Cross multiply
    552.62x = 828.92 × 141.75
  4. Step 4: Simplify right side
    552.62x = 117,499.76
  5. Step 5: Solve for x
    x = 117,499.76/552.62
  6. Step 6: Final answer
    x = 212.62

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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.