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Finding the Fourth Proportional to 605.66, 835.87 and 357.05

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Solution

The fourth proportional to 605.66, 835.87 and 357.05 is: 492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.66 : 835.87 = 357.05 : x
  2. Step 2: Convert to fraction form
    605.66/835.87 = 357.05/x
  3. Step 3: Cross multiply
    605.66x = 835.87 × 357.05
  4. Step 4: Simplify right side
    605.66x = 298,447.38
  5. Step 5: Solve for x
    x = 298,447.38/605.66
  6. Step 6: Final answer
    x = 492.76

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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.