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Finding the Fourth Proportional to 279.01, 418.11 and 168.95

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Solution

The fourth proportional to 279.01, 418.11 and 168.95 is: 253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.01 : 418.11 = 168.95 : x
  2. Step 2: Convert to fraction form
    279.01/418.11 = 168.95/x
  3. Step 3: Cross multiply
    279.01x = 418.11 × 168.95
  4. Step 4: Simplify right side
    279.01x = 70,641.05
  5. Step 5: Solve for x
    x = 70,641.05/279.01
  6. Step 6: Final answer
    x = 253.18

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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.