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Finding the Fourth Proportional to 1,852.43, 2,779.74 and 683.25

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Solution

The fourth proportional to 1,852.43, 2,779.74 and 683.25 is: 1,025.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.43 : 2,779.74 = 683.25 : x
  2. Step 2: Convert to fraction form
    1,852.43/2,779.74 = 683.25/x
  3. Step 3: Cross multiply
    1,852.43x = 2,779.74 × 683.25
  4. Step 4: Simplify right side
    1,852.43x = 1,899,257.36
  5. Step 5: Solve for x
    x = 1,899,257.36/1,852.43
  6. Step 6: Final answer
    x = 1,025.28

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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.