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Finding the Fourth Proportional to 1,784.07, 2,676.11 and 629.55

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Solution

The fourth proportional to 1,784.07, 2,676.11 and 629.55 is: 944.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.07 : 2,676.11 = 629.55 : x
  2. Step 2: Convert to fraction form
    1,784.07/2,676.11 = 629.55/x
  3. Step 3: Cross multiply
    1,784.07x = 2,676.11 × 629.55
  4. Step 4: Simplify right side
    1,784.07x = 1,684,741.90
  5. Step 5: Solve for x
    x = 1,684,741.90/1,784.07
  6. Step 6: Final answer
    x = 944.33

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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.