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Finding the Fourth Proportional to 279.04, 385.12 and 168.54

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Solution

The fourth proportional to 279.04, 385.12 and 168.54 is: 232.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.04 : 385.12 = 168.54 : x
  2. Step 2: Convert to fraction form
    279.04/385.12 = 168.54/x
  3. Step 3: Cross multiply
    279.04x = 385.12 × 168.54
  4. Step 4: Simplify right side
    279.04x = 64,908.12
  5. Step 5: Solve for x
    x = 64,908.12/279.04
  6. Step 6: Final answer
    x = 232.61

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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.