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Finding the Fourth Proportional to 189.39, 262.74 and 179.36

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Solution

The fourth proportional to 189.39, 262.74 and 179.36 is: 248.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.39 : 262.74 = 179.36 : x
  2. Step 2: Convert to fraction form
    189.39/262.74 = 179.36/x
  3. Step 3: Cross multiply
    189.39x = 262.74 × 179.36
  4. Step 4: Simplify right side
    189.39x = 47,126.87
  5. Step 5: Solve for x
    x = 47,126.87/189.39
  6. Step 6: Final answer
    x = 248.84

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.