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Finding the Fourth Proportional to 331.27, 457.37 and 303.52

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Solution

The fourth proportional to 331.27, 457.37 and 303.52 is: 419.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.27 : 457.37 = 303.52 : x
  2. Step 2: Convert to fraction form
    331.27/457.37 = 303.52/x
  3. Step 3: Cross multiply
    331.27x = 457.37 × 303.52
  4. Step 4: Simplify right side
    331.27x = 138,820.94
  5. Step 5: Solve for x
    x = 138,820.94/331.27
  6. Step 6: Final answer
    x = 419.06

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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.