Home / 1,323.12-1,983.77-445.35

Finding the Fourth Proportional to 1,323.12, 1,983.77 and 445.35

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Solution

The fourth proportional to 1,323.12, 1,983.77 and 445.35 is: 667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.12 : 1,983.77 = 445.35 : x
  2. Step 2: Convert to fraction form
    1,323.12/1,983.77 = 445.35/x
  3. Step 3: Cross multiply
    1,323.12x = 1,983.77 × 445.35
  4. Step 4: Simplify right side
    1,323.12x = 883,471.97
  5. Step 5: Solve for x
    x = 883,471.97/1,323.12
  6. Step 6: Final answer
    x = 667.72

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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.