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Finding the Fourth Proportional to 101.18, 151.78 and 36.17

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Solution

The fourth proportional to 101.18, 151.78 and 36.17 is: 54.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.18 : 151.78 = 36.17 : x
  2. Step 2: Convert to fraction form
    101.18/151.78 = 36.17/x
  3. Step 3: Cross multiply
    101.18x = 151.78 × 36.17
  4. Step 4: Simplify right side
    101.18x = 5,490.17
  5. Step 5: Solve for x
    x = 5,490.17/101.18
  6. Step 6: Final answer
    x = 54.26

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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.