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Finding the Fourth Proportional to 625.88, 938.82 and 163.66

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Solution

The fourth proportional to 625.88, 938.82 and 163.66 is: 245.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.88 : 938.82 = 163.66 : x
  2. Step 2: Convert to fraction form
    625.88/938.82 = 163.66/x
  3. Step 3: Cross multiply
    625.88x = 938.82 × 163.66
  4. Step 4: Simplify right side
    625.88x = 153,644.93
  5. Step 5: Solve for x
    x = 153,644.93/625.88
  6. Step 6: Final answer
    x = 245.49

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Similar ratio
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1.5x scale

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.