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Finding the Fourth Proportional to 641.11, 963.21 and 606.16

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Solution

The fourth proportional to 641.11, 963.21 and 606.16 is: 910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.11 : 963.21 = 606.16 : x
  2. Step 2: Convert to fraction form
    641.11/963.21 = 606.16/x
  3. Step 3: Cross multiply
    641.11x = 963.21 × 606.16
  4. Step 4: Simplify right side
    641.11x = 583,859.37
  5. Step 5: Solve for x
    x = 583,859.37/641.11
  6. Step 6: Final answer
    x = 910.70

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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.