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Finding the Fourth Proportional to 271.33, 374.29 and 172.92

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Solution

The fourth proportional to 271.33, 374.29 and 172.92 is: 238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.33 : 374.29 = 172.92 : x
  2. Step 2: Convert to fraction form
    271.33/374.29 = 172.92/x
  3. Step 3: Cross multiply
    271.33x = 374.29 × 172.92
  4. Step 4: Simplify right side
    271.33x = 64,722.23
  5. Step 5: Solve for x
    x = 64,722.23/271.33
  6. Step 6: Final answer
    x = 238.54

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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.