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Finding the Fourth Proportional to 613.26, 917.82 and 605.06

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Solution

The fourth proportional to 613.26, 917.82 and 605.06 is: 905.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.26 : 917.82 = 605.06 : x
  2. Step 2: Convert to fraction form
    613.26/917.82 = 605.06/x
  3. Step 3: Cross multiply
    613.26x = 917.82 × 605.06
  4. Step 4: Simplify right side
    613.26x = 555,331.58
  5. Step 5: Solve for x
    x = 555,331.58/613.26
  6. Step 6: Final answer
    x = 905.54

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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.