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Finding the Fourth Proportional to 271.42, 407.09 and 134.46

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Solution

The fourth proportional to 271.42, 407.09 and 134.46 is: 201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.42 : 407.09 = 134.46 : x
  2. Step 2: Convert to fraction form
    271.42/407.09 = 134.46/x
  3. Step 3: Cross multiply
    271.42x = 407.09 × 134.46
  4. Step 4: Simplify right side
    271.42x = 54,737.66
  5. Step 5: Solve for x
    x = 54,737.66/271.42
  6. Step 6: Final answer
    x = 201.67

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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.