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Finding the Fourth Proportional to 240.44, 331.81 and 135.53

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Solution

The fourth proportional to 240.44, 331.81 and 135.53 is: 187.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.44 : 331.81 = 135.53 : x
  2. Step 2: Convert to fraction form
    240.44/331.81 = 135.53/x
  3. Step 3: Cross multiply
    240.44x = 331.81 × 135.53
  4. Step 4: Simplify right side
    240.44x = 44,968.89
  5. Step 5: Solve for x
    x = 44,968.89/240.44
  6. Step 6: Final answer
    x = 187.03

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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.