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Finding the Fourth Proportional to 1,293.49, 1,785.14 and 851.37

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Solution

The fourth proportional to 1,293.49, 1,785.14 and 851.37 is: 1,174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.49 : 1,785.14 = 851.37 : x
  2. Step 2: Convert to fraction form
    1,293.49/1,785.14 = 851.37/x
  3. Step 3: Cross multiply
    1,293.49x = 1,785.14 × 851.37
  4. Step 4: Simplify right side
    1,293.49x = 1,519,814.64
  5. Step 5: Solve for x
    x = 1,519,814.64/1,293.49
  6. Step 6: Final answer
    x = 1,174.97

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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.