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Finding the Fourth Proportional to 603.69, 832.98 and 355.09

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Solution

The fourth proportional to 603.69, 832.98 and 355.09 is: 489.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.69 : 832.98 = 355.09 : x
  2. Step 2: Convert to fraction form
    603.69/832.98 = 355.09/x
  3. Step 3: Cross multiply
    603.69x = 832.98 × 355.09
  4. Step 4: Simplify right side
    603.69x = 295,782.87
  5. Step 5: Solve for x
    x = 295,782.87/603.69
  6. Step 6: Final answer
    x = 489.96

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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.