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Finding the Fourth Proportional to 348.69, 481.22 and 215.99

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Solution

The fourth proportional to 348.69, 481.22 and 215.99 is: 298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.69 : 481.22 = 215.99 : x
  2. Step 2: Convert to fraction form
    348.69/481.22 = 215.99/x
  3. Step 3: Cross multiply
    348.69x = 481.22 × 215.99
  4. Step 4: Simplify right side
    348.69x = 103,935.22
  5. Step 5: Solve for x
    x = 103,935.22/348.69
  6. Step 6: Final answer
    x = 298.07

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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.