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Finding the Fourth Proportional to 97.42, 134.28 and 68.26

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Solution

The fourth proportional to 97.42, 134.28 and 68.26 is: 94.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.42 : 134.28 = 68.26 : x
  2. Step 2: Convert to fraction form
    97.42/134.28 = 68.26/x
  3. Step 3: Cross multiply
    97.42x = 134.28 × 68.26
  4. Step 4: Simplify right side
    97.42x = 9,165.95
  5. Step 5: Solve for x
    x = 9,165.95/97.42
  6. Step 6: Final answer
    x = 94.09

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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.