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Finding the Fourth Proportional to 418.22, 626.22 and 335.56

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Solution

The fourth proportional to 418.22, 626.22 and 335.56 is: 502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.22 : 626.22 = 335.56 : x
  2. Step 2: Convert to fraction form
    418.22/626.22 = 335.56/x
  3. Step 3: Cross multiply
    418.22x = 626.22 × 335.56
  4. Step 4: Simplify right side
    418.22x = 210,132.71
  5. Step 5: Solve for x
    x = 210,132.71/418.22
  6. Step 6: Final answer
    x = 502.45

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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.