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Finding the Fourth Proportional to 636.17, 952.86 and 620.67

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Solution

The fourth proportional to 636.17, 952.86 and 620.67 is: 929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.17 : 952.86 = 620.67 : x
  2. Step 2: Convert to fraction form
    636.17/952.86 = 620.67/x
  3. Step 3: Cross multiply
    636.17x = 952.86 × 620.67
  4. Step 4: Simplify right side
    636.17x = 591,411.62
  5. Step 5: Solve for x
    x = 591,411.62/636.17
  6. Step 6: Final answer
    x = 929.65

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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.