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Finding the Fourth Proportional to 605.25, 835.14 and 356.55

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Solution

The fourth proportional to 605.25, 835.14 and 356.55 is: 491.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.25 : 835.14 = 356.55 : x
  2. Step 2: Convert to fraction form
    605.25/835.14 = 356.55/x
  3. Step 3: Cross multiply
    605.25x = 835.14 × 356.55
  4. Step 4: Simplify right side
    605.25x = 297,769.17
  5. Step 5: Solve for x
    x = 297,769.17/605.25
  6. Step 6: Final answer
    x = 491.98

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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.