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Finding the Fourth Proportional to 636.96, 955.65 and 272.06

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Solution

The fourth proportional to 636.96, 955.65 and 272.06 is: 408.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.96 : 955.65 = 272.06 : x
  2. Step 2: Convert to fraction form
    636.96/955.65 = 272.06/x
  3. Step 3: Cross multiply
    636.96x = 955.65 × 272.06
  4. Step 4: Simplify right side
    636.96x = 259,994.14
  5. Step 5: Solve for x
    x = 259,994.14/636.96
  6. Step 6: Final answer
    x = 408.18

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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.