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Finding the Fourth Proportional to 1,289.82, 1,935.27 and 927.48

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Solution

The fourth proportional to 1,289.82, 1,935.27 and 927.48 is: 1,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.82 : 1,935.27 = 927.48 : x
  2. Step 2: Convert to fraction form
    1,289.82/1,935.27 = 927.48/x
  3. Step 3: Cross multiply
    1,289.82x = 1,935.27 × 927.48
  4. Step 4: Simplify right side
    1,289.82x = 1,794,924.22
  5. Step 5: Solve for x
    x = 1,794,924.22/1,289.82
  6. Step 6: Final answer
    x = 1,391.61

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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.