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Finding the Fourth Proportional to 98.05, 147 and 40.27

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Solution

The fourth proportional to 98.05, 147 and 40.27 is: 60.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.05 : 147 = 40.27 : x
  2. Step 2: Convert to fraction form
    98.05/147 = 40.27/x
  3. Step 3: Cross multiply
    98.05x = 147 × 40.27
  4. Step 4: Simplify right side
    98.05x = 5,919.69
  5. Step 5: Solve for x
    x = 5,919.69/98.05
  6. Step 6: Final answer
    x = 60.37

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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.