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Finding the Fourth Proportional to 240.44, 331.74 and 147.20

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Solution

The fourth proportional to 240.44, 331.74 and 147.20 is: 203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.44 : 331.74 = 147.20 : x
  2. Step 2: Convert to fraction form
    240.44/331.74 = 147.20/x
  3. Step 3: Cross multiply
    240.44x = 331.74 × 147.20
  4. Step 4: Simplify right side
    240.44x = 48,832.96
  5. Step 5: Solve for x
    x = 48,832.96/240.44
  6. Step 6: Final answer
    x = 203.10

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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.