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Finding the Fourth Proportional to 98.17, 135.05 and 95.42

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Solution

The fourth proportional to 98.17, 135.05 and 95.42 is: 131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.17 : 135.05 = 95.42 : x
  2. Step 2: Convert to fraction form
    98.17/135.05 = 95.42/x
  3. Step 3: Cross multiply
    98.17x = 135.05 × 95.42
  4. Step 4: Simplify right side
    98.17x = 12,886.33
  5. Step 5: Solve for x
    x = 12,886.33/98.17
  6. Step 6: Final answer
    x = 131.27

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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.