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Finding the Fourth Proportional to 375.75, 518.79 and 245.00

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Solution

The fourth proportional to 375.75, 518.79 and 245.00 is: 338.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.75 : 518.79 = 245.00 : x
  2. Step 2: Convert to fraction form
    375.75/518.79 = 245.00/x
  3. Step 3: Cross multiply
    375.75x = 518.79 × 245.00
  4. Step 4: Simplify right side
    375.75x = 127,100.96
  5. Step 5: Solve for x
    x = 127,100.96/375.75
  6. Step 6: Final answer
    x = 338.26

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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.