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Finding the Fourth Proportional to 605.00, 907.09 and 388.46

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Solution

The fourth proportional to 605.00, 907.09 and 388.46 is: 582.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.00 : 907.09 = 388.46 : x
  2. Step 2: Convert to fraction form
    605.00/907.09 = 388.46/x
  3. Step 3: Cross multiply
    605.00x = 907.09 × 388.46
  4. Step 4: Simplify right side
    605.00x = 352,361.70
  5. Step 5: Solve for x
    x = 352,361.70/605.00
  6. Step 6: Final answer
    x = 582.42

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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.