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Finding the Fourth Proportional to 603.96, 836.60 and 591.65

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Solution

The fourth proportional to 603.96, 836.60 and 591.65 is: 819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.96 : 836.60 = 591.65 : x
  2. Step 2: Convert to fraction form
    603.96/836.60 = 591.65/x
  3. Step 3: Cross multiply
    603.96x = 836.60 × 591.65
  4. Step 4: Simplify right side
    603.96x = 494,975.09
  5. Step 5: Solve for x
    x = 494,975.09/603.96
  6. Step 6: Final answer
    x = 819.55

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.