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Finding the Fourth Proportional to 1,490.57, 2,236.49 and 797.06

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Solution

The fourth proportional to 1,490.57, 2,236.49 and 797.06 is: 1,195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.57 : 2,236.49 = 797.06 : x
  2. Step 2: Convert to fraction form
    1,490.57/2,236.49 = 797.06/x
  3. Step 3: Cross multiply
    1,490.57x = 2,236.49 × 797.06
  4. Step 4: Simplify right side
    1,490.57x = 1,782,625.80
  5. Step 5: Solve for x
    x = 1,782,625.80/1,490.57
  6. Step 6: Final answer
    x = 1,195.93

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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.