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Finding the Fourth Proportional to 331.34, 497.01 and 146.21

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Solution

The fourth proportional to 331.34, 497.01 and 146.21 is: 219.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.34 : 497.01 = 146.21 : x
  2. Step 2: Convert to fraction form
    331.34/497.01 = 146.21/x
  3. Step 3: Cross multiply
    331.34x = 497.01 × 146.21
  4. Step 4: Simplify right side
    331.34x = 72,665.35
  5. Step 5: Solve for x
    x = 72,665.35/331.34
  6. Step 6: Final answer
    x = 219.31

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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.