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Finding the Fourth Proportional to 1,270.67, 1,902.03 and 1,163.00

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Solution

The fourth proportional to 1,270.67, 1,902.03 and 1,163.00 is: 1,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.67 : 1,902.03 = 1,163.00 : x
  2. Step 2: Convert to fraction form
    1,270.67/1,902.03 = 1,163.00/x
  3. Step 3: Cross multiply
    1,270.67x = 1,902.03 × 1,163.00
  4. Step 4: Simplify right side
    1,270.67x = 2,212,051.38
  5. Step 5: Solve for x
    x = 2,212,051.38/1,270.67
  6. Step 6: Final answer
    x = 1,740.86

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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.