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Finding the Fourth Proportional to 641.94, 963 and 295.26

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Solution

The fourth proportional to 641.94, 963 and 295.26 is: 442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.94 : 963 = 295.26 : x
  2. Step 2: Convert to fraction form
    641.94/963 = 295.26/x
  3. Step 3: Cross multiply
    641.94x = 963 × 295.26
  4. Step 4: Simplify right side
    641.94x = 284,335.38
  5. Step 5: Solve for x
    x = 284,335.38/641.94
  6. Step 6: Final answer
    x = 442.93

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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.