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Finding the Fourth Proportional to 105.14, 158.01 and 97.85

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Solution

The fourth proportional to 105.14, 158.01 and 97.85 is: 147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.14 : 158.01 = 97.85 : x
  2. Step 2: Convert to fraction form
    105.14/158.01 = 97.85/x
  3. Step 3: Cross multiply
    105.14x = 158.01 × 97.85
  4. Step 4: Simplify right side
    105.14x = 15,460.00
  5. Step 5: Solve for x
    x = 15,460.00/105.14
  6. Step 6: Final answer
    x = 147.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.