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Finding the Fourth Proportional to 271.81, 375.09 and 147.47

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Solution

The fourth proportional to 271.81, 375.09 and 147.47 is: 203.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.81 : 375.09 = 147.47 : x
  2. Step 2: Convert to fraction form
    271.81/375.09 = 147.47/x
  3. Step 3: Cross multiply
    271.81x = 375.09 × 147.47
  4. Step 4: Simplify right side
    271.81x = 55,314.61
  5. Step 5: Solve for x
    x = 55,314.61/271.81
  6. Step 6: Final answer
    x = 203.50

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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.