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Finding the Fourth Proportional to 605.07, 835.00 and 356.40

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Solution

The fourth proportional to 605.07, 835.00 and 356.40 is: 491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.07 : 835.00 = 356.40 : x
  2. Step 2: Convert to fraction form
    605.07/835.00 = 356.40/x
  3. Step 3: Cross multiply
    605.07x = 835.00 × 356.40
  4. Step 4: Simplify right side
    605.07x = 297,593.11
  5. Step 5: Solve for x
    x = 297,593.11/605.07
  6. Step 6: Final answer
    x = 491.83

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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.