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Finding the Fourth Proportional to 625.66, 938.52 and 192.82

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Solution

The fourth proportional to 625.66, 938.52 and 192.82 is: 289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.66 : 938.52 = 192.82 : x
  2. Step 2: Convert to fraction form
    625.66/938.52 = 192.82/x
  3. Step 3: Cross multiply
    625.66x = 938.52 × 192.82
  4. Step 4: Simplify right side
    625.66x = 180,965.43
  5. Step 5: Solve for x
    x = 180,965.43/625.66
  6. Step 6: Final answer
    x = 289.24

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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.