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Finding the Fourth Proportional to 817.02, 1,223.37 and 673.38

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Solution

The fourth proportional to 817.02, 1,223.37 and 673.38 is: 1,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.02 : 1,223.37 = 673.38 : x
  2. Step 2: Convert to fraction form
    817.02/1,223.37 = 673.38/x
  3. Step 3: Cross multiply
    817.02x = 1,223.37 × 673.38
  4. Step 4: Simplify right side
    817.02x = 823,792.89
  5. Step 5: Solve for x
    x = 823,792.89/817.02
  6. Step 6: Final answer
    x = 1,008.29

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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.