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Finding the Fourth Proportional to 2,179.98, 3,270.54 and 619.98

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Solution

The fourth proportional to 2,179.98, 3,270.54 and 619.98 is: 930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.98 : 3,270.54 = 619.98 : x
  2. Step 2: Convert to fraction form
    2,179.98/3,270.54 = 619.98/x
  3. Step 3: Cross multiply
    2,179.98x = 3,270.54 × 619.98
  4. Step 4: Simplify right side
    2,179.98x = 2,027,669.39
  5. Step 5: Solve for x
    x = 2,027,669.39/2,179.98
  6. Step 6: Final answer
    x = 930.13

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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.