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Finding the Fourth Proportional to 175.82, 242.61 and 102.11

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Solution

The fourth proportional to 175.82, 242.61 and 102.11 is: 140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.82 : 242.61 = 102.11 : x
  2. Step 2: Convert to fraction form
    175.82/242.61 = 102.11/x
  3. Step 3: Cross multiply
    175.82x = 242.61 × 102.11
  4. Step 4: Simplify right side
    175.82x = 24,772.91
  5. Step 5: Solve for x
    x = 24,772.91/175.82
  6. Step 6: Final answer
    x = 140.90

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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.