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Finding the Fourth Proportional to 1,330.93, 1,992.61 and 1,134.78

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Solution

The fourth proportional to 1,330.93, 1,992.61 and 1,134.78 is: 1,698.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.93 : 1,992.61 = 1,134.78 : x
  2. Step 2: Convert to fraction form
    1,330.93/1,992.61 = 1,134.78/x
  3. Step 3: Cross multiply
    1,330.93x = 1,992.61 × 1,134.78
  4. Step 4: Simplify right side
    1,330.93x = 2,261,173.98
  5. Step 5: Solve for x
    x = 2,261,173.98/1,330.93
  6. Step 6: Final answer
    x = 1,698.94

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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.