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Finding the Fourth Proportional to 576.82, 864.41 and 381.50

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Solution

The fourth proportional to 576.82, 864.41 and 381.50 is: 571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.82 : 864.41 = 381.50 : x
  2. Step 2: Convert to fraction form
    576.82/864.41 = 381.50/x
  3. Step 3: Cross multiply
    576.82x = 864.41 × 381.50
  4. Step 4: Simplify right side
    576.82x = 329,768.09
  5. Step 5: Solve for x
    x = 329,768.09/576.82
  6. Step 6: Final answer
    x = 571.71

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1.5x scale

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.