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Finding the Fourth Proportional to 217.36, 300.10 and 159.28

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Solution

The fourth proportional to 217.36, 300.10 and 159.28 is: 219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.36 : 300.10 = 159.28 : x
  2. Step 2: Convert to fraction form
    217.36/300.10 = 159.28/x
  3. Step 3: Cross multiply
    217.36x = 300.10 × 159.28
  4. Step 4: Simplify right side
    217.36x = 47,799.93
  5. Step 5: Solve for x
    x = 47,799.93/217.36
  6. Step 6: Final answer
    x = 219.91

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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.