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Finding the Fourth Proportional to 636.92, 955.43 and 247.11

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Solution

The fourth proportional to 636.92, 955.43 and 247.11 is: 370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.92 : 955.43 = 247.11 : x
  2. Step 2: Convert to fraction form
    636.92/955.43 = 247.11/x
  3. Step 3: Cross multiply
    636.92x = 955.43 × 247.11
  4. Step 4: Simplify right side
    636.92x = 236,095.07
  5. Step 5: Solve for x
    x = 236,095.07/636.92
  6. Step 6: Final answer
    x = 370.69

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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.