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Finding the Fourth Proportional to 146.31, 219.60 and 98.25

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Solution

The fourth proportional to 146.31, 219.60 and 98.25 is: 147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.31 : 219.60 = 98.25 : x
  2. Step 2: Convert to fraction form
    146.31/219.60 = 98.25/x
  3. Step 3: Cross multiply
    146.31x = 219.60 × 98.25
  4. Step 4: Simplify right side
    146.31x = 21,575.70
  5. Step 5: Solve for x
    x = 21,575.70/146.31
  6. Step 6: Final answer
    x = 147.47

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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.