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Finding the Fourth Proportional to 446.56, 668.40 and 338.08

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Solution

The fourth proportional to 446.56, 668.40 and 338.08 is: 506.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.56 : 668.40 = 338.08 : x
  2. Step 2: Convert to fraction form
    446.56/668.40 = 338.08/x
  3. Step 3: Cross multiply
    446.56x = 668.40 × 338.08
  4. Step 4: Simplify right side
    446.56x = 225,972.67
  5. Step 5: Solve for x
    x = 225,972.67/446.56
  6. Step 6: Final answer
    x = 506.03

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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.