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Finding the Fourth Proportional to 272.95, 408.72 and 151.07

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Solution

The fourth proportional to 272.95, 408.72 and 151.07 is: 226.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.95 : 408.72 = 151.07 : x
  2. Step 2: Convert to fraction form
    272.95/408.72 = 151.07/x
  3. Step 3: Cross multiply
    272.95x = 408.72 × 151.07
  4. Step 4: Simplify right side
    272.95x = 61,745.33
  5. Step 5: Solve for x
    x = 61,745.33/272.95
  6. Step 6: Final answer
    x = 226.21

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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.