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Finding the Fourth Proportional to 159.24, 219.20 and 134.66

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Solution

The fourth proportional to 159.24, 219.20 and 134.66 is: 185.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.24 : 219.20 = 134.66 : x
  2. Step 2: Convert to fraction form
    159.24/219.20 = 134.66/x
  3. Step 3: Cross multiply
    159.24x = 219.20 × 134.66
  4. Step 4: Simplify right side
    159.24x = 29,517.47
  5. Step 5: Solve for x
    x = 29,517.47/159.24
  6. Step 6: Final answer
    x = 185.36

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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.