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Finding the Fourth Proportional to 101.13, 150.89 and 98.90

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Solution

The fourth proportional to 101.13, 150.89 and 98.90 is: 147.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.13 : 150.89 = 98.90 : x
  2. Step 2: Convert to fraction form
    101.13/150.89 = 98.90/x
  3. Step 3: Cross multiply
    101.13x = 150.89 × 98.90
  4. Step 4: Simplify right side
    101.13x = 14,923.27
  5. Step 5: Solve for x
    x = 14,923.27/101.13
  6. Step 6: Final answer
    x = 147.57

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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.