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Finding the Fourth Proportional to 395.20, 592 and 178.96

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Solution

The fourth proportional to 395.20, 592 and 178.96 is: 268.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.20 : 592 = 178.96 : x
  2. Step 2: Convert to fraction form
    395.20/592 = 178.96/x
  3. Step 3: Cross multiply
    395.20x = 592 × 178.96
  4. Step 4: Simplify right side
    395.20x = 105,944.32
  5. Step 5: Solve for x
    x = 105,944.32/395.20
  6. Step 6: Final answer
    x = 268.08

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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.