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Finding the Fourth Proportional to 217.08, 299.55 and 134.17

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Solution

The fourth proportional to 217.08, 299.55 and 134.17 is: 185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.08 : 299.55 = 134.17 : x
  2. Step 2: Convert to fraction form
    217.08/299.55 = 134.17/x
  3. Step 3: Cross multiply
    217.08x = 299.55 × 134.17
  4. Step 4: Simplify right side
    217.08x = 40,189.87
  5. Step 5: Solve for x
    x = 40,189.87/217.08
  6. Step 6: Final answer
    x = 185.14

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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.