Home / 1,323.09-1,984.50-445.59

Finding the Fourth Proportional to 1,323.09, 1,984.50 and 445.59

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Solution

The fourth proportional to 1,323.09, 1,984.50 and 445.59 is: 668.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.09 : 1,984.50 = 445.59 : x
  2. Step 2: Convert to fraction form
    1,323.09/1,984.50 = 445.59/x
  3. Step 3: Cross multiply
    1,323.09x = 1,984.50 × 445.59
  4. Step 4: Simplify right side
    1,323.09x = 884,273.36
  5. Step 5: Solve for x
    x = 884,273.36/1,323.09
  6. Step 6: Final answer
    x = 668.34

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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.