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Finding the Fourth Proportional to 240.11, 358.25 and 217.12

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Solution

The fourth proportional to 240.11, 358.25 and 217.12 is: 323.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.11 : 358.25 = 217.12 : x
  2. Step 2: Convert to fraction form
    240.11/358.25 = 217.12/x
  3. Step 3: Cross multiply
    240.11x = 358.25 × 217.12
  4. Step 4: Simplify right side
    240.11x = 77,783.24
  5. Step 5: Solve for x
    x = 77,783.24/240.11
  6. Step 6: Final answer
    x = 323.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.