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Finding the Fourth Proportional to 581.05, 871.57 and 191.04

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Solution

The fourth proportional to 581.05, 871.57 and 191.04 is: 286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.05 : 871.57 = 191.04 : x
  2. Step 2: Convert to fraction form
    581.05/871.57 = 191.04/x
  3. Step 3: Cross multiply
    581.05x = 871.57 × 191.04
  4. Step 4: Simplify right side
    581.05x = 166,504.73
  5. Step 5: Solve for x
    x = 166,504.73/581.05
  6. Step 6: Final answer
    x = 286.56

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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.