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Finding the Fourth Proportional to 604.20, 833.60 and 355.58

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Solution

The fourth proportional to 604.20, 833.60 and 355.58 is: 490.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.20 : 833.60 = 355.58 : x
  2. Step 2: Convert to fraction form
    604.20/833.60 = 355.58/x
  3. Step 3: Cross multiply
    604.20x = 833.60 × 355.58
  4. Step 4: Simplify right side
    604.20x = 296,411.49
  5. Step 5: Solve for x
    x = 296,411.49/604.20
  6. Step 6: Final answer
    x = 490.59

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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.