Home / 240.20-331.26-212.60

Finding the Fourth Proportional to 240.20, 331.26 and 212.60

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Solution

The fourth proportional to 240.20, 331.26 and 212.60 is: 293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.20 : 331.26 = 212.60 : x
  2. Step 2: Convert to fraction form
    240.20/331.26 = 212.60/x
  3. Step 3: Cross multiply
    240.20x = 331.26 × 212.60
  4. Step 4: Simplify right side
    240.20x = 70,424.22
  5. Step 5: Solve for x
    x = 70,424.22/240.20
  6. Step 6: Final answer
    x = 293.20

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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.