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Finding the Fourth Proportional to 636.17, 952.63 and 405.32

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Solution

The fourth proportional to 636.17, 952.63 and 405.32 is: 606.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.17 : 952.63 = 405.32 : x
  2. Step 2: Convert to fraction form
    636.17/952.63 = 405.32/x
  3. Step 3: Cross multiply
    636.17x = 952.63 × 405.32
  4. Step 4: Simplify right side
    636.17x = 386,114.22
  5. Step 5: Solve for x
    x = 386,114.22/636.17
  6. Step 6: Final answer
    x = 606.94

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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.