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Finding the Fourth Proportional to 159.33, 219.90 and 97.23

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Solution

The fourth proportional to 159.33, 219.90 and 97.23 is: 134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.33 : 219.90 = 97.23 : x
  2. Step 2: Convert to fraction form
    159.33/219.90 = 97.23/x
  3. Step 3: Cross multiply
    159.33x = 219.90 × 97.23
  4. Step 4: Simplify right side
    159.33x = 21,380.88
  5. Step 5: Solve for x
    x = 21,380.88/159.33
  6. Step 6: Final answer
    x = 134.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.