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Finding the Fourth Proportional to 1,326.03, 1,990.00 and 1,069.14

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Solution

The fourth proportional to 1,326.03, 1,990.00 and 1,069.14 is: 1,604.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.03 : 1,990.00 = 1,069.14 : x
  2. Step 2: Convert to fraction form
    1,326.03/1,990.00 = 1,069.14/x
  3. Step 3: Cross multiply
    1,326.03x = 1,990.00 × 1,069.14
  4. Step 4: Simplify right side
    1,326.03x = 2,127,580.19
  5. Step 5: Solve for x
    x = 2,127,580.19/1,326.03
  6. Step 6: Final answer
    x = 1,604.47

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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.