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Finding the Fourth Proportional to 591, 814.94 and 381.12

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Solution

The fourth proportional to 591, 814.94 and 381.12 is: 525.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    591 : 814.94 = 381.12 : x
  2. Step 2: Convert to fraction form
    591/814.94 = 381.12/x
  3. Step 3: Cross multiply
    591x = 814.94 × 381.12
  4. Step 4: Simplify right side
    591x = 310,589.93
  5. Step 5: Solve for x
    x = 310,589.93/591
  6. Step 6: Final answer
    x = 525.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.