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Finding the Fourth Proportional to 1,269.04, 1,901.04 and 993.84

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Solution

The fourth proportional to 1,269.04, 1,901.04 and 993.84 is: 1,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.04 : 1,901.04 = 993.84 : x
  2. Step 2: Convert to fraction form
    1,269.04/1,901.04 = 993.84/x
  3. Step 3: Cross multiply
    1,269.04x = 1,901.04 × 993.84
  4. Step 4: Simplify right side
    1,269.04x = 1,889,324.62
  5. Step 5: Solve for x
    x = 1,889,324.62/1,269.04
  6. Step 6: Final answer
    x = 1,488.79

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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.