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Finding the Fourth Proportional to 159.88, 219.03 and 154.03

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Solution

The fourth proportional to 159.88, 219.03 and 154.03 is: 211.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.88 : 219.03 = 154.03 : x
  2. Step 2: Convert to fraction form
    159.88/219.03 = 154.03/x
  3. Step 3: Cross multiply
    159.88x = 219.03 × 154.03
  4. Step 4: Simplify right side
    159.88x = 33,737.19
  5. Step 5: Solve for x
    x = 33,737.19/159.88
  6. Step 6: Final answer
    x = 211.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.