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Finding the Fourth Proportional to 605.90, 907.23 and 388.82

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Solution

The fourth proportional to 605.90, 907.23 and 388.82 is: 582.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.90 : 907.23 = 388.82 : x
  2. Step 2: Convert to fraction form
    605.90/907.23 = 388.82/x
  3. Step 3: Cross multiply
    605.90x = 907.23 × 388.82
  4. Step 4: Simplify right side
    605.90x = 352,749.17
  5. Step 5: Solve for x
    x = 352,749.17/605.90
  6. Step 6: Final answer
    x = 582.19

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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.