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Finding the Fourth Proportional to 240.18, 331.20 and 181.31

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Solution

The fourth proportional to 240.18, 331.20 and 181.31 is: 250.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.18 : 331.20 = 181.31 : x
  2. Step 2: Convert to fraction form
    240.18/331.20 = 181.31/x
  3. Step 3: Cross multiply
    240.18x = 331.20 × 181.31
  4. Step 4: Simplify right side
    240.18x = 60,048.22
  5. Step 5: Solve for x
    x = 60,048.22/240.18
  6. Step 6: Final answer
    x = 250.01

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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.