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Finding the Fourth Proportional to 355.44, 534.56 and 300.80

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Solution

The fourth proportional to 355.44, 534.56 and 300.80 is: 452.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.44 : 534.56 = 300.80 : x
  2. Step 2: Convert to fraction form
    355.44/534.56 = 300.80/x
  3. Step 3: Cross multiply
    355.44x = 534.56 × 300.80
  4. Step 4: Simplify right side
    355.44x = 160,795.65
  5. Step 5: Solve for x
    x = 160,795.65/355.44
  6. Step 6: Final answer
    x = 452.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.