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Finding the Fourth Proportional to 2,007.22, 3,009.74 and 620.18

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Solution

The fourth proportional to 2,007.22, 3,009.74 and 620.18 is: 929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.22 : 3,009.74 = 620.18 : x
  2. Step 2: Convert to fraction form
    2,007.22/3,009.74 = 620.18/x
  3. Step 3: Cross multiply
    2,007.22x = 3,009.74 × 620.18
  4. Step 4: Simplify right side
    2,007.22x = 1,866,580.55
  5. Step 5: Solve for x
    x = 1,866,580.55/2,007.22
  6. Step 6: Final answer
    x = 929.93

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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.