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Finding the Fourth Proportional to 270.77, 405.91 and 160.81

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Solution

The fourth proportional to 270.77, 405.91 and 160.81 is: 241.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.77 : 405.91 = 160.81 : x
  2. Step 2: Convert to fraction form
    270.77/405.91 = 160.81/x
  3. Step 3: Cross multiply
    270.77x = 405.91 × 160.81
  4. Step 4: Simplify right side
    270.77x = 65,273.57
  5. Step 5: Solve for x
    x = 65,273.57/270.77
  6. Step 6: Final answer
    x = 241.07

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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.