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Finding the Fourth Proportional to 641.12, 958.17 and 468.15

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Solution

The fourth proportional to 641.12, 958.17 and 468.15 is: 699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.12 : 958.17 = 468.15 : x
  2. Step 2: Convert to fraction form
    641.12/958.17 = 468.15/x
  3. Step 3: Cross multiply
    641.12x = 958.17 × 468.15
  4. Step 4: Simplify right side
    641.12x = 448,567.33
  5. Step 5: Solve for x
    x = 448,567.33/641.12
  6. Step 6: Final answer
    x = 699.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.