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Finding the Fourth Proportional to 217.95, 300.89 and 144.37

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Solution

The fourth proportional to 217.95, 300.89 and 144.37 is: 199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.95 : 300.89 = 144.37 : x
  2. Step 2: Convert to fraction form
    217.95/300.89 = 144.37/x
  3. Step 3: Cross multiply
    217.95x = 300.89 × 144.37
  4. Step 4: Simplify right side
    217.95x = 43,437.98
  5. Step 5: Solve for x
    x = 43,437.98/217.95
  6. Step 6: Final answer
    x = 199.31

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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.