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Finding the Fourth Proportional to 641.15, 960.53 and 366.41

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Solution

The fourth proportional to 641.15, 960.53 and 366.41 is: 548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.15 : 960.53 = 366.41 : x
  2. Step 2: Convert to fraction form
    641.15/960.53 = 366.41/x
  3. Step 3: Cross multiply
    641.15x = 960.53 × 366.41
  4. Step 4: Simplify right side
    641.15x = 351,951.11
  5. Step 5: Solve for x
    x = 351,951.11/641.15
  6. Step 6: Final answer
    x = 548.94

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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.