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Finding the Fourth Proportional to 849.23, 1,273.88 and 272.11

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Solution

The fourth proportional to 849.23, 1,273.88 and 272.11 is: 408.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.23 : 1,273.88 = 272.11 : x
  2. Step 2: Convert to fraction form
    849.23/1,273.88 = 272.11/x
  3. Step 3: Cross multiply
    849.23x = 1,273.88 × 272.11
  4. Step 4: Simplify right side
    849.23x = 346,633.84
  5. Step 5: Solve for x
    x = 346,633.84/849.23
  6. Step 6: Final answer
    x = 408.17

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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.