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Finding the Fourth Proportional to 578.75, 798.63 and 330.01

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Solution

The fourth proportional to 578.75, 798.63 and 330.01 is: 455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.75 : 798.63 = 330.01 : x
  2. Step 2: Convert to fraction form
    578.75/798.63 = 330.01/x
  3. Step 3: Cross multiply
    578.75x = 798.63 × 330.01
  4. Step 4: Simplify right side
    578.75x = 263,552.65
  5. Step 5: Solve for x
    x = 263,552.65/578.75
  6. Step 6: Final answer
    x = 455.39

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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.