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Finding the Fourth Proportional to 641.52, 962.15 and 179.33

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Solution

The fourth proportional to 641.52, 962.15 and 179.33 is: 268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.52 : 962.15 = 179.33 : x
  2. Step 2: Convert to fraction form
    641.52/962.15 = 179.33/x
  3. Step 3: Cross multiply
    641.52x = 962.15 × 179.33
  4. Step 4: Simplify right side
    641.52x = 172,536.65
  5. Step 5: Solve for x
    x = 172,536.65/641.52
  6. Step 6: Final answer
    x = 268.95

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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.