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Finding the Fourth Proportional to 922.64, 1,384.04 and 273.38

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Solution

The fourth proportional to 922.64, 1,384.04 and 273.38 is: 410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.64 : 1,384.04 = 273.38 : x
  2. Step 2: Convert to fraction form
    922.64/1,384.04 = 273.38/x
  3. Step 3: Cross multiply
    922.64x = 1,384.04 × 273.38
  4. Step 4: Simplify right side
    922.64x = 378,361.08
  5. Step 5: Solve for x
    x = 378,361.08/922.64
  6. Step 6: Final answer
    x = 410.09

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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.