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Finding the Fourth Proportional to 146.19, 218.58 and 100.23

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Solution

The fourth proportional to 146.19, 218.58 and 100.23 is: 149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.19 : 218.58 = 100.23 : x
  2. Step 2: Convert to fraction form
    146.19/218.58 = 100.23/x
  3. Step 3: Cross multiply
    146.19x = 218.58 × 100.23
  4. Step 4: Simplify right side
    146.19x = 21,908.27
  5. Step 5: Solve for x
    x = 21,908.27/146.19
  6. Step 6: Final answer
    x = 149.86

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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.