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Finding the Fourth Proportional to 375.98, 563.87 and 254.21

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Solution

The fourth proportional to 375.98, 563.87 and 254.21 is: 381.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.98 : 563.87 = 254.21 : x
  2. Step 2: Convert to fraction form
    375.98/563.87 = 254.21/x
  3. Step 3: Cross multiply
    375.98x = 563.87 × 254.21
  4. Step 4: Simplify right side
    375.98x = 143,339.21
  5. Step 5: Solve for x
    x = 143,339.21/375.98
  6. Step 6: Final answer
    x = 381.25

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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.