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Finding the Fourth Proportional to 605.03, 834.64 and 356.18

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Solution

The fourth proportional to 605.03, 834.64 and 356.18 is: 491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.03 : 834.64 = 356.18 : x
  2. Step 2: Convert to fraction form
    605.03/834.64 = 356.18/x
  3. Step 3: Cross multiply
    605.03x = 834.64 × 356.18
  4. Step 4: Simplify right side
    605.03x = 297,277.01
  5. Step 5: Solve for x
    x = 297,277.01/605.03
  6. Step 6: Final answer
    x = 491.35

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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.