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Finding the Fourth Proportional to 378.37, 567.09 and 161.49

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Solution

The fourth proportional to 378.37, 567.09 and 161.49 is: 242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.37 : 567.09 = 161.49 : x
  2. Step 2: Convert to fraction form
    378.37/567.09 = 161.49/x
  3. Step 3: Cross multiply
    378.37x = 567.09 × 161.49
  4. Step 4: Simplify right side
    378.37x = 91,579.36
  5. Step 5: Solve for x
    x = 91,579.36/378.37
  6. Step 6: Final answer
    x = 242.04

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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.