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Finding the Fourth Proportional to 581.33, 871.94 and 211.13

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Solution

The fourth proportional to 581.33, 871.94 and 211.13 is: 316.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.33 : 871.94 = 211.13 : x
  2. Step 2: Convert to fraction form
    581.33/871.94 = 211.13/x
  3. Step 3: Cross multiply
    581.33x = 871.94 × 211.13
  4. Step 4: Simplify right side
    581.33x = 184,093.99
  5. Step 5: Solve for x
    x = 184,093.99/581.33
  6. Step 6: Final answer
    x = 316.68

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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.