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Finding the Fourth Proportional to 414.54, 622.44 and 357.21

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Solution

The fourth proportional to 414.54, 622.44 and 357.21 is: 536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.54 : 622.44 = 357.21 : x
  2. Step 2: Convert to fraction form
    414.54/622.44 = 357.21/x
  3. Step 3: Cross multiply
    414.54x = 622.44 × 357.21
  4. Step 4: Simplify right side
    414.54x = 222,341.79
  5. Step 5: Solve for x
    x = 222,341.79/414.54
  6. Step 6: Final answer
    x = 536.36

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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.