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Finding the Fourth Proportional to 148.82, 222.15 and 127.22

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Solution

The fourth proportional to 148.82, 222.15 and 127.22 is: 189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.82 : 222.15 = 127.22 : x
  2. Step 2: Convert to fraction form
    148.82/222.15 = 127.22/x
  3. Step 3: Cross multiply
    148.82x = 222.15 × 127.22
  4. Step 4: Simplify right side
    148.82x = 28,261.29
  5. Step 5: Solve for x
    x = 28,261.29/148.82
  6. Step 6: Final answer
    x = 189.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.