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Finding the Fourth Proportional to 722.90, 996.78 and 573.26

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Solution

The fourth proportional to 722.90, 996.78 and 573.26 is: 790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.90 : 996.78 = 573.26 : x
  2. Step 2: Convert to fraction form
    722.90/996.78 = 573.26/x
  3. Step 3: Cross multiply
    722.90x = 996.78 × 573.26
  4. Step 4: Simplify right side
    722.90x = 571,414.10
  5. Step 5: Solve for x
    x = 571,414.10/722.90
  6. Step 6: Final answer
    x = 790.45

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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.