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Finding the Fourth Proportional to 290.77, 436.16 and 273.87

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Solution

The fourth proportional to 290.77, 436.16 and 273.87 is: 410.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.77 : 436.16 = 273.87 : x
  2. Step 2: Convert to fraction form
    290.77/436.16 = 273.87/x
  3. Step 3: Cross multiply
    290.77x = 436.16 × 273.87
  4. Step 4: Simplify right side
    290.77x = 119,451.14
  5. Step 5: Solve for x
    x = 119,451.14/290.77
  6. Step 6: Final answer
    x = 410.81

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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.