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Finding the Fourth Proportional to 603.90, 828.32 and 579.60

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Solution

The fourth proportional to 603.90, 828.32 and 579.60 is: 794.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.90 : 828.32 = 579.60 : x
  2. Step 2: Convert to fraction form
    603.90/828.32 = 579.60/x
  3. Step 3: Cross multiply
    603.90x = 828.32 × 579.60
  4. Step 4: Simplify right side
    603.90x = 480,091.37
  5. Step 5: Solve for x
    x = 480,091.37/603.90
  6. Step 6: Final answer
    x = 794.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.