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Finding the Fourth Proportional to 271.58, 407.43 and 127.13

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Solution

The fourth proportional to 271.58, 407.43 and 127.13 is: 190.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.58 : 407.43 = 127.13 : x
  2. Step 2: Convert to fraction form
    271.58/407.43 = 127.13/x
  3. Step 3: Cross multiply
    271.58x = 407.43 × 127.13
  4. Step 4: Simplify right side
    271.58x = 51,794.54
  5. Step 5: Solve for x
    x = 51,794.54/271.58
  6. Step 6: Final answer
    x = 190.72

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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.