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Finding the Fourth Proportional to 1,661.83, 2,491.00 and 1,270.98

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Solution

The fourth proportional to 1,661.83, 2,491.00 and 1,270.98 is: 1,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.83 : 2,491.00 = 1,270.98 : x
  2. Step 2: Convert to fraction form
    1,661.83/2,491.00 = 1,270.98/x
  3. Step 3: Cross multiply
    1,661.83x = 2,491.00 × 1,270.98
  4. Step 4: Simplify right side
    1,661.83x = 3,166,008.00
  5. Step 5: Solve for x
    x = 3,166,008.00/1,661.83
  6. Step 6: Final answer
    x = 1,905.14

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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.