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Finding the Fourth Proportional to 272.91, 375.98 and 189.88

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Solution

The fourth proportional to 272.91, 375.98 and 189.88 is: 261.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.91 : 375.98 = 189.88 : x
  2. Step 2: Convert to fraction form
    272.91/375.98 = 189.88/x
  3. Step 3: Cross multiply
    272.91x = 375.98 × 189.88
  4. Step 4: Simplify right side
    272.91x = 71,390.26
  5. Step 5: Solve for x
    x = 71,390.26/272.91
  6. Step 6: Final answer
    x = 261.59

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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.