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Finding the Fourth Proportional to 578.73, 798.60 and 330.00

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Solution

The fourth proportional to 578.73, 798.60 and 330.00 is: 455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.73 : 798.60 = 330.00 : x
  2. Step 2: Convert to fraction form
    578.73/798.60 = 330.00/x
  3. Step 3: Cross multiply
    578.73x = 798.60 × 330.00
  4. Step 4: Simplify right side
    578.73x = 263,539.50
  5. Step 5: Solve for x
    x = 263,539.50/578.73
  6. Step 6: Final answer
    x = 455.38

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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.