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Finding the Fourth Proportional to 608.67, 839.82 and 343.07

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Solution

The fourth proportional to 608.67, 839.82 and 343.07 is: 473.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.67 : 839.82 = 343.07 : x
  2. Step 2: Convert to fraction form
    608.67/839.82 = 343.07/x
  3. Step 3: Cross multiply
    608.67x = 839.82 × 343.07
  4. Step 4: Simplify right side
    608.67x = 288,112.85
  5. Step 5: Solve for x
    x = 288,112.85/608.67
  6. Step 6: Final answer
    x = 473.35

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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.