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Finding the Fourth Proportional to 1,192.68, 1,789.32 and 327.06

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Solution

The fourth proportional to 1,192.68, 1,789.32 and 327.06 is: 490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.68 : 1,789.32 = 327.06 : x
  2. Step 2: Convert to fraction form
    1,192.68/1,789.32 = 327.06/x
  3. Step 3: Cross multiply
    1,192.68x = 1,789.32 × 327.06
  4. Step 4: Simplify right side
    1,192.68x = 585,215.00
  5. Step 5: Solve for x
    x = 585,215.00/1,192.68
  6. Step 6: Final answer
    x = 490.67

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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.