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Finding the Fourth Proportional to 303.21, 418.47 and 170.44

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Solution

The fourth proportional to 303.21, 418.47 and 170.44 is: 235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.21 : 418.47 = 170.44 : x
  2. Step 2: Convert to fraction form
    303.21/418.47 = 170.44/x
  3. Step 3: Cross multiply
    303.21x = 418.47 × 170.44
  4. Step 4: Simplify right side
    303.21x = 71,324.03
  5. Step 5: Solve for x
    x = 71,324.03/303.21
  6. Step 6: Final answer
    x = 235.23

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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.