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Finding the Fourth Proportional to 240.28, 360.31 and 103.26

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Solution

The fourth proportional to 240.28, 360.31 and 103.26 is: 154.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.28 : 360.31 = 103.26 : x
  2. Step 2: Convert to fraction form
    240.28/360.31 = 103.26/x
  3. Step 3: Cross multiply
    240.28x = 360.31 × 103.26
  4. Step 4: Simplify right side
    240.28x = 37,205.61
  5. Step 5: Solve for x
    x = 37,205.61/240.28
  6. Step 6: Final answer
    x = 154.84

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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.