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Finding the Fourth Proportional to 112.82, 155.59 and 97.34

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Solution

The fourth proportional to 112.82, 155.59 and 97.34 is: 134.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.82 : 155.59 = 97.34 : x
  2. Step 2: Convert to fraction form
    112.82/155.59 = 97.34/x
  3. Step 3: Cross multiply
    112.82x = 155.59 × 97.34
  4. Step 4: Simplify right side
    112.82x = 15,144.11
  5. Step 5: Solve for x
    x = 15,144.11/112.82
  6. Step 6: Final answer
    x = 134.24

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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.