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Finding the Fourth Proportional to 370.32, 508.86 and 331.44

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Solution

The fourth proportional to 370.32, 508.86 and 331.44 is: 455.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.32 : 508.86 = 331.44 : x
  2. Step 2: Convert to fraction form
    370.32/508.86 = 331.44/x
  3. Step 3: Cross multiply
    370.32x = 508.86 × 331.44
  4. Step 4: Simplify right side
    370.32x = 168,656.56
  5. Step 5: Solve for x
    x = 168,656.56/370.32
  6. Step 6: Final answer
    x = 455.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.