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Finding the Fourth Proportional to 375.45, 563.42 and 259.84

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Solution

The fourth proportional to 375.45, 563.42 and 259.84 is: 389.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.45 : 563.42 = 259.84 : x
  2. Step 2: Convert to fraction form
    375.45/563.42 = 259.84/x
  3. Step 3: Cross multiply
    375.45x = 563.42 × 259.84
  4. Step 4: Simplify right side
    375.45x = 146,399.05
  5. Step 5: Solve for x
    x = 146,399.05/375.45
  6. Step 6: Final answer
    x = 389.93

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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.