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Finding the Fourth Proportional to 605.58, 835.09 and 395.94

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Solution

The fourth proportional to 605.58, 835.09 and 395.94 is: 546.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.58 : 835.09 = 395.94 : x
  2. Step 2: Convert to fraction form
    605.58/835.09 = 395.94/x
  3. Step 3: Cross multiply
    605.58x = 835.09 × 395.94
  4. Step 4: Simplify right side
    605.58x = 330,645.21
  5. Step 5: Solve for x
    x = 330,645.21/605.58
  6. Step 6: Final answer
    x = 546.00

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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.