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Finding the Fourth Proportional to 159.17, 219.65 and 93.65

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Solution

The fourth proportional to 159.17, 219.65 and 93.65 is: 129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.17 : 219.65 = 93.65 : x
  2. Step 2: Convert to fraction form
    159.17/219.65 = 93.65/x
  3. Step 3: Cross multiply
    159.17x = 219.65 × 93.65
  4. Step 4: Simplify right side
    159.17x = 20,568.66
  5. Step 5: Solve for x
    x = 20,568.66/159.17
  6. Step 6: Final answer
    x = 129.23

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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.