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Finding the Fourth Proportional to 303.07, 418.17 and 192.68

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Solution

The fourth proportional to 303.07, 418.17 and 192.68 is: 265.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.07 : 418.17 = 192.68 : x
  2. Step 2: Convert to fraction form
    303.07/418.17 = 192.68/x
  3. Step 3: Cross multiply
    303.07x = 418.17 × 192.68
  4. Step 4: Simplify right side
    303.07x = 80,573.08
  5. Step 5: Solve for x
    x = 80,573.08/303.07
  6. Step 6: Final answer
    x = 265.86

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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.