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Finding the Fourth Proportional to 271.81, 375.10 and 155.37

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Solution

The fourth proportional to 271.81, 375.10 and 155.37 is: 214.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.81 : 375.10 = 155.37 : x
  2. Step 2: Convert to fraction form
    271.81/375.10 = 155.37/x
  3. Step 3: Cross multiply
    271.81x = 375.10 × 155.37
  4. Step 4: Simplify right side
    271.81x = 58,278.90
  5. Step 5: Solve for x
    x = 58,278.90/271.81
  6. Step 6: Final answer
    x = 214.41

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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.