Home / 220.20-330.08-143.22

Finding the Fourth Proportional to 220.20, 330.08 and 143.22

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Solution

The fourth proportional to 220.20, 330.08 and 143.22 is: 214.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.20 : 330.08 = 143.22 : x
  2. Step 2: Convert to fraction form
    220.20/330.08 = 143.22/x
  3. Step 3: Cross multiply
    220.20x = 330.08 × 143.22
  4. Step 4: Simplify right side
    220.20x = 47,274.06
  5. Step 5: Solve for x
    x = 47,274.06/220.20
  6. Step 6: Final answer
    x = 214.69

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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.