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Finding the Fourth Proportional to 1,480.62, 2,043.36 and 851.25

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Solution

The fourth proportional to 1,480.62, 2,043.36 and 851.25 is: 1,174.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.62 : 2,043.36 = 851.25 : x
  2. Step 2: Convert to fraction form
    1,480.62/2,043.36 = 851.25/x
  3. Step 3: Cross multiply
    1,480.62x = 2,043.36 × 851.25
  4. Step 4: Simplify right side
    1,480.62x = 1,739,410.20
  5. Step 5: Solve for x
    x = 1,739,410.20/1,480.62
  6. Step 6: Final answer
    x = 1,174.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.