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Finding the Fourth Proportional to 922.45, 1,383.67 and 273.23

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Solution

The fourth proportional to 922.45, 1,383.67 and 273.23 is: 409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.45 : 1,383.67 = 273.23 : x
  2. Step 2: Convert to fraction form
    922.45/1,383.67 = 273.23/x
  3. Step 3: Cross multiply
    922.45x = 1,383.67 × 273.23
  4. Step 4: Simplify right side
    922.45x = 378,060.15
  5. Step 5: Solve for x
    x = 378,060.15/922.45
  6. Step 6: Final answer
    x = 409.84

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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.