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Finding the Fourth Proportional to 641.29, 960.92 and 467.15

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Solution

The fourth proportional to 641.29, 960.92 and 467.15 is: 699.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.29 : 960.92 = 467.15 : x
  2. Step 2: Convert to fraction form
    641.29/960.92 = 467.15/x
  3. Step 3: Cross multiply
    641.29x = 960.92 × 467.15
  4. Step 4: Simplify right side
    641.29x = 448,893.84
  5. Step 5: Solve for x
    x = 448,893.84/641.29
  6. Step 6: Final answer
    x = 699.99

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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.