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Finding the Fourth Proportional to 271.96, 375.13 and 172.38

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Solution

The fourth proportional to 271.96, 375.13 and 172.38 is: 237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.96 : 375.13 = 172.38 : x
  2. Step 2: Convert to fraction form
    271.96/375.13 = 172.38/x
  3. Step 3: Cross multiply
    271.96x = 375.13 × 172.38
  4. Step 4: Simplify right side
    271.96x = 64,664.42
  5. Step 5: Solve for x
    x = 64,664.42/271.96
  6. Step 6: Final answer
    x = 237.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.