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Finding the Fourth Proportional to 636.42, 959.37 and 581.74

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Solution

The fourth proportional to 636.42, 959.37 and 581.74 is: 876.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.42 : 959.37 = 581.74 : x
  2. Step 2: Convert to fraction form
    636.42/959.37 = 581.74/x
  3. Step 3: Cross multiply
    636.42x = 959.37 × 581.74
  4. Step 4: Simplify right side
    636.42x = 558,103.90
  5. Step 5: Solve for x
    x = 558,103.90/636.42
  6. Step 6: Final answer
    x = 876.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.