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Finding the Fourth Proportional to 271.47, 407.43 and 125.39

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Solution

The fourth proportional to 271.47, 407.43 and 125.39 is: 188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.47 : 407.43 = 125.39 : x
  2. Step 2: Convert to fraction form
    271.47/407.43 = 125.39/x
  3. Step 3: Cross multiply
    271.47x = 407.43 × 125.39
  4. Step 4: Simplify right side
    271.47x = 51,087.65
  5. Step 5: Solve for x
    x = 51,087.65/271.47
  6. Step 6: Final answer
    x = 188.19

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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.