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Finding the Fourth Proportional to 395.17, 592.29 and 163.78

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Solution

The fourth proportional to 395.17, 592.29 and 163.78 is: 245.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.17 : 592.29 = 163.78 : x
  2. Step 2: Convert to fraction form
    395.17/592.29 = 163.78/x
  3. Step 3: Cross multiply
    395.17x = 592.29 × 163.78
  4. Step 4: Simplify right side
    395.17x = 97,003.78
  5. Step 5: Solve for x
    x = 97,003.78/395.17
  6. Step 6: Final answer
    x = 245.48

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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.