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Finding the Fourth Proportional to 603.72, 834.66 and 472.68

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Solution

The fourth proportional to 603.72, 834.66 and 472.68 is: 653.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.72 : 834.66 = 472.68 : x
  2. Step 2: Convert to fraction form
    603.72/834.66 = 472.68/x
  3. Step 3: Cross multiply
    603.72x = 834.66 × 472.68
  4. Step 4: Simplify right side
    603.72x = 394,527.09
  5. Step 5: Solve for x
    x = 394,527.09/603.72
  6. Step 6: Final answer
    x = 653.49

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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.