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Finding the Fourth Proportional to 1,489.00, 2,233.57 and 1,228.52

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Solution

The fourth proportional to 1,489.00, 2,233.57 and 1,228.52 is: 1,842.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.00 : 2,233.57 = 1,228.52 : x
  2. Step 2: Convert to fraction form
    1,489.00/2,233.57 = 1,228.52/x
  3. Step 3: Cross multiply
    1,489.00x = 2,233.57 × 1,228.52
  4. Step 4: Simplify right side
    1,489.00x = 2,743,971.18
  5. Step 5: Solve for x
    x = 2,743,971.18/1,489.00
  6. Step 6: Final answer
    x = 1,842.83

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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.