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Finding the Fourth Proportional to 159.01, 220.46 and 153.94

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Solution

The fourth proportional to 159.01, 220.46 and 153.94 is: 213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.01 : 220.46 = 153.94 : x
  2. Step 2: Convert to fraction form
    159.01/220.46 = 153.94/x
  3. Step 3: Cross multiply
    159.01x = 220.46 × 153.94
  4. Step 4: Simplify right side
    159.01x = 33,937.61
  5. Step 5: Solve for x
    x = 33,937.61/159.01
  6. Step 6: Final answer
    x = 213.43

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.