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Finding the Fourth Proportional to 418.97, 628.76 and 175.66

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Solution

The fourth proportional to 418.97, 628.76 and 175.66 is: 263.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.97 : 628.76 = 175.66 : x
  2. Step 2: Convert to fraction form
    418.97/628.76 = 175.66/x
  3. Step 3: Cross multiply
    418.97x = 628.76 × 175.66
  4. Step 4: Simplify right side
    418.97x = 110,446.85
  5. Step 5: Solve for x
    x = 110,446.85/418.97
  6. Step 6: Final answer
    x = 263.61

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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.