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Finding the Fourth Proportional to 220.44, 330.86 and 175.28

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Solution

The fourth proportional to 220.44, 330.86 and 175.28 is: 263.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.44 : 330.86 = 175.28 : x
  2. Step 2: Convert to fraction form
    220.44/330.86 = 175.28/x
  3. Step 3: Cross multiply
    220.44x = 330.86 × 175.28
  4. Step 4: Simplify right side
    220.44x = 57,993.14
  5. Step 5: Solve for x
    x = 57,993.14/220.44
  6. Step 6: Final answer
    x = 263.08

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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.