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Finding the Fourth Proportional to 1,348.30, 2,022.72 and 618.09

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Solution

The fourth proportional to 1,348.30, 2,022.72 and 618.09 is: 927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.30 : 2,022.72 = 618.09 : x
  2. Step 2: Convert to fraction form
    1,348.30/2,022.72 = 618.09/x
  3. Step 3: Cross multiply
    1,348.30x = 2,022.72 × 618.09
  4. Step 4: Simplify right side
    1,348.30x = 1,250,223.00
  5. Step 5: Solve for x
    x = 1,250,223.00/1,348.30
  6. Step 6: Final answer
    x = 927.26

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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.