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Finding the Fourth Proportional to 101.21, 150.92 and 100.29

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Solution

The fourth proportional to 101.21, 150.92 and 100.29 is: 149.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.21 : 150.92 = 100.29 : x
  2. Step 2: Convert to fraction form
    101.21/150.92 = 100.29/x
  3. Step 3: Cross multiply
    101.21x = 150.92 × 100.29
  4. Step 4: Simplify right side
    101.21x = 15,136.14
  5. Step 5: Solve for x
    x = 15,136.14/101.21
  6. Step 6: Final answer
    x = 149.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.