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Finding the Fourth Proportional to 603.43, 832.76 and 455.81

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Solution

The fourth proportional to 603.43, 832.76 and 455.81 is: 629.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.43 : 832.76 = 455.81 : x
  2. Step 2: Convert to fraction form
    603.43/832.76 = 455.81/x
  3. Step 3: Cross multiply
    603.43x = 832.76 × 455.81
  4. Step 4: Simplify right side
    603.43x = 379,578.17
  5. Step 5: Solve for x
    x = 379,578.17/603.43
  6. Step 6: Final answer
    x = 629.04

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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.