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Finding the Fourth Proportional to 1,630.67, 2,247.67 and 1,276.00

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Solution

The fourth proportional to 1,630.67, 2,247.67 and 1,276.00 is: 1,758.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.67 : 2,247.67 = 1,276.00 : x
  2. Step 2: Convert to fraction form
    1,630.67/2,247.67 = 1,276.00/x
  3. Step 3: Cross multiply
    1,630.67x = 2,247.67 × 1,276.00
  4. Step 4: Simplify right side
    1,630.67x = 2,868,022.90
  5. Step 5: Solve for x
    x = 2,868,022.90/1,630.67
  6. Step 6: Final answer
    x = 1,758.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.