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Finding the Fourth Proportional to 414.80, 622.10 and 349.82

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Solution

The fourth proportional to 414.80, 622.10 and 349.82 is: 524.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.80 : 622.10 = 349.82 : x
  2. Step 2: Convert to fraction form
    414.80/622.10 = 349.82/x
  3. Step 3: Cross multiply
    414.80x = 622.10 × 349.82
  4. Step 4: Simplify right side
    414.80x = 217,623.02
  5. Step 5: Solve for x
    x = 217,623.02/414.80
  6. Step 6: Final answer
    x = 524.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.