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Finding the Fourth Proportional to 271.85, 407.36 and 163.51

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Solution

The fourth proportional to 271.85, 407.36 and 163.51 is: 245.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.85 : 407.36 = 163.51 : x
  2. Step 2: Convert to fraction form
    271.85/407.36 = 163.51/x
  3. Step 3: Cross multiply
    271.85x = 407.36 × 163.51
  4. Step 4: Simplify right side
    271.85x = 66,607.43
  5. Step 5: Solve for x
    x = 66,607.43/271.85
  6. Step 6: Final answer
    x = 245.02

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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.