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Finding the Fourth Proportional to 1,444.45, 1,993.26 and 855.04

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Solution

The fourth proportional to 1,444.45, 1,993.26 and 855.04 is: 1,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.45 : 1,993.26 = 855.04 : x
  2. Step 2: Convert to fraction form
    1,444.45/1,993.26 = 855.04/x
  3. Step 3: Cross multiply
    1,444.45x = 1,993.26 × 855.04
  4. Step 4: Simplify right side
    1,444.45x = 1,704,317.03
  5. Step 5: Solve for x
    x = 1,704,317.03/1,444.45
  6. Step 6: Final answer
    x = 1,179.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.