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Finding the Fourth Proportional to 220.44, 304.25 and 127.17

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Solution

The fourth proportional to 220.44, 304.25 and 127.17 is: 175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.44 : 304.25 = 127.17 : x
  2. Step 2: Convert to fraction form
    220.44/304.25 = 127.17/x
  3. Step 3: Cross multiply
    220.44x = 304.25 × 127.17
  4. Step 4: Simplify right side
    220.44x = 38,692.41
  5. Step 5: Solve for x
    x = 38,692.41/220.44
  6. Step 6: Final answer
    x = 175.52

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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.