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Finding the Fourth Proportional to 1,852.91, 2,779.75 and 620.33

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Solution

The fourth proportional to 1,852.91, 2,779.75 and 620.33 is: 930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.91 : 2,779.75 = 620.33 : x
  2. Step 2: Convert to fraction form
    1,852.91/2,779.75 = 620.33/x
  3. Step 3: Cross multiply
    1,852.91x = 2,779.75 × 620.33
  4. Step 4: Simplify right side
    1,852.91x = 1,724,359.22
  5. Step 5: Solve for x
    x = 1,724,359.22/1,852.91
  6. Step 6: Final answer
    x = 930.62

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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.