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Finding the Fourth Proportional to 98.08, 136.25 and 97.18

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Solution

The fourth proportional to 98.08, 136.25 and 97.18 is: 135.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.08 : 136.25 = 97.18 : x
  2. Step 2: Convert to fraction form
    98.08/136.25 = 97.18/x
  3. Step 3: Cross multiply
    98.08x = 136.25 × 97.18
  4. Step 4: Simplify right side
    98.08x = 13,241.44
  5. Step 5: Solve for x
    x = 13,241.44/98.08
  6. Step 6: Final answer
    x = 135.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.