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Finding the Fourth Proportional to 240.20, 360.42 and 118.44

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Solution

The fourth proportional to 240.20, 360.42 and 118.44 is: 177.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.20 : 360.42 = 118.44 : x
  2. Step 2: Convert to fraction form
    240.20/360.42 = 118.44/x
  3. Step 3: Cross multiply
    240.20x = 360.42 × 118.44
  4. Step 4: Simplify right side
    240.20x = 42,688.14
  5. Step 5: Solve for x
    x = 42,688.14/240.20
  6. Step 6: Final answer
    x = 177.72

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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.