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Finding the Fourth Proportional to 271.46, 407.22 and 88.81

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Solution

The fourth proportional to 271.46, 407.22 and 88.81 is: 133.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.46 : 407.22 = 88.81 : x
  2. Step 2: Convert to fraction form
    271.46/407.22 = 88.81/x
  3. Step 3: Cross multiply
    271.46x = 407.22 × 88.81
  4. Step 4: Simplify right side
    271.46x = 36,163.39
  5. Step 5: Solve for x
    x = 36,163.39/271.46
  6. Step 6: Final answer
    x = 133.22

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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.