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Finding the Fourth Proportional to 331.41, 497.27 and 148.86

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Solution

The fourth proportional to 331.41, 497.27 and 148.86 is: 223.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.41 : 497.27 = 148.86 : x
  2. Step 2: Convert to fraction form
    331.41/497.27 = 148.86/x
  3. Step 3: Cross multiply
    331.41x = 497.27 × 148.86
  4. Step 4: Simplify right side
    331.41x = 74,023.98
  5. Step 5: Solve for x
    x = 74,023.98/331.41
  6. Step 6: Final answer
    x = 223.36

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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.