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Finding the Fourth Proportional to 603.87, 833.36 and 355.22

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Solution

The fourth proportional to 603.87, 833.36 and 355.22 is: 490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.87 : 833.36 = 355.22 : x
  2. Step 2: Convert to fraction form
    603.87/833.36 = 355.22/x
  3. Step 3: Cross multiply
    603.87x = 833.36 × 355.22
  4. Step 4: Simplify right side
    603.87x = 296,020.20
  5. Step 5: Solve for x
    x = 296,020.20/603.87
  6. Step 6: Final answer
    x = 490.21

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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.