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Finding the Fourth Proportional to 97.38, 146.68 and 89.06

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Solution

The fourth proportional to 97.38, 146.68 and 89.06 is: 134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.38 : 146.68 = 89.06 : x
  2. Step 2: Convert to fraction form
    97.38/146.68 = 89.06/x
  3. Step 3: Cross multiply
    97.38x = 146.68 × 89.06
  4. Step 4: Simplify right side
    97.38x = 13,062.36
  5. Step 5: Solve for x
    x = 13,062.36/97.38
  6. Step 6: Final answer
    x = 134.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.