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Finding the Fourth Proportional to 127.22, 190.77 and 88.67

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Solution

The fourth proportional to 127.22, 190.77 and 88.67 is: 132.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.22 : 190.77 = 88.67 : x
  2. Step 2: Convert to fraction form
    127.22/190.77 = 88.67/x
  3. Step 3: Cross multiply
    127.22x = 190.77 × 88.67
  4. Step 4: Simplify right side
    127.22x = 16,915.58
  5. Step 5: Solve for x
    x = 16,915.58/127.22
  6. Step 6: Final answer
    x = 132.96

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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.