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Finding the Fourth Proportional to 608.43, 838.17 and 484.05

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Solution

The fourth proportional to 608.43, 838.17 and 484.05 is: 666.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.43 : 838.17 = 484.05 : x
  2. Step 2: Convert to fraction form
    608.43/838.17 = 484.05/x
  3. Step 3: Cross multiply
    608.43x = 838.17 × 484.05
  4. Step 4: Simplify right side
    608.43x = 405,716.19
  5. Step 5: Solve for x
    x = 405,716.19/608.43
  6. Step 6: Final answer
    x = 666.82

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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.