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Finding the Fourth Proportional to 1,429.94, 2,144 and 552.44

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Solution

The fourth proportional to 1,429.94, 2,144 and 552.44 is: 828.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.94 : 2,144 = 552.44 : x
  2. Step 2: Convert to fraction form
    1,429.94/2,144 = 552.44/x
  3. Step 3: Cross multiply
    1,429.94x = 2,144 × 552.44
  4. Step 4: Simplify right side
    1,429.94x = 1,184,431.36
  5. Step 5: Solve for x
    x = 1,184,431.36/1,429.94
  6. Step 6: Final answer
    x = 828.31

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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.