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Finding the Fourth Proportional to 189.28, 261.36 and 179.04

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Solution

The fourth proportional to 189.28, 261.36 and 179.04 is: 247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.28 : 261.36 = 179.04 : x
  2. Step 2: Convert to fraction form
    189.28/261.36 = 179.04/x
  3. Step 3: Cross multiply
    189.28x = 261.36 × 179.04
  4. Step 4: Simplify right side
    189.28x = 46,793.89
  5. Step 5: Solve for x
    x = 46,793.89/189.28
  6. Step 6: Final answer
    x = 247.22

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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.