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Finding the Fourth Proportional to 178.98, 268.88 and 144.96

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Solution

The fourth proportional to 178.98, 268.88 and 144.96 is: 217.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.98 : 268.88 = 144.96 : x
  2. Step 2: Convert to fraction form
    178.98/268.88 = 144.96/x
  3. Step 3: Cross multiply
    178.98x = 268.88 × 144.96
  4. Step 4: Simplify right side
    178.98x = 38,976.12
  5. Step 5: Solve for x
    x = 38,976.12/178.98
  6. Step 6: Final answer
    x = 217.77

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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.