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Finding the Fourth Proportional to 161.96, 242.84 and 88.84

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Solution

The fourth proportional to 161.96, 242.84 and 88.84 is: 133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.96 : 242.84 = 88.84 : x
  2. Step 2: Convert to fraction form
    161.96/242.84 = 88.84/x
  3. Step 3: Cross multiply
    161.96x = 242.84 × 88.84
  4. Step 4: Simplify right side
    161.96x = 21,573.91
  5. Step 5: Solve for x
    x = 21,573.91/161.96
  6. Step 6: Final answer
    x = 133.21

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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.