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Finding the Fourth Proportional to 146.45, 219.41 and 123.57

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Solution

The fourth proportional to 146.45, 219.41 and 123.57 is: 185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.45 : 219.41 = 123.57 : x
  2. Step 2: Convert to fraction form
    146.45/219.41 = 123.57/x
  3. Step 3: Cross multiply
    146.45x = 219.41 × 123.57
  4. Step 4: Simplify right side
    146.45x = 27,112.34
  5. Step 5: Solve for x
    x = 27,112.34/146.45
  6. Step 6: Final answer
    x = 185.13

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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.