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Finding the Fourth Proportional to 465.17, 641.84 and 268.61

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Solution

The fourth proportional to 465.17, 641.84 and 268.61 is: 370.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.17 : 641.84 = 268.61 : x
  2. Step 2: Convert to fraction form
    465.17/641.84 = 268.61/x
  3. Step 3: Cross multiply
    465.17x = 641.84 × 268.61
  4. Step 4: Simplify right side
    465.17x = 172,404.64
  5. Step 5: Solve for x
    x = 172,404.64/465.17
  6. Step 6: Final answer
    x = 370.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.