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Finding the Fourth Proportional to 1,192.90, 1,789.15 and 327.01

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Solution

The fourth proportional to 1,192.90, 1,789.15 and 327.01 is: 490.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.90 : 1,789.15 = 327.01 : x
  2. Step 2: Convert to fraction form
    1,192.90/1,789.15 = 327.01/x
  3. Step 3: Cross multiply
    1,192.90x = 1,789.15 × 327.01
  4. Step 4: Simplify right side
    1,192.90x = 585,069.94
  5. Step 5: Solve for x
    x = 585,069.94/1,192.90
  6. Step 6: Final answer
    x = 490.46

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1.5x scale

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.