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Finding the Fourth Proportional to 641.00, 963.30 and 381.04

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Solution

The fourth proportional to 641.00, 963.30 and 381.04 is: 572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.00 : 963.30 = 381.04 : x
  2. Step 2: Convert to fraction form
    641.00/963.30 = 381.04/x
  3. Step 3: Cross multiply
    641.00x = 963.30 × 381.04
  4. Step 4: Simplify right side
    641.00x = 367,060.02
  5. Step 5: Solve for x
    x = 367,060.02/641.00
  6. Step 6: Final answer
    x = 572.64

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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.