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Finding the Fourth Proportional to 271.66, 407.37 and 109.30

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Solution

The fourth proportional to 271.66, 407.37 and 109.30 is: 163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.66 : 407.37 = 109.30 : x
  2. Step 2: Convert to fraction form
    271.66/407.37 = 109.30/x
  3. Step 3: Cross multiply
    271.66x = 407.37 × 109.30
  4. Step 4: Simplify right side
    271.66x = 44,525.54
  5. Step 5: Solve for x
    x = 44,525.54/271.66
  6. Step 6: Final answer
    x = 163.90

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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.