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Finding the Fourth Proportional to 378.94, 567.99 and 162.28

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Solution

The fourth proportional to 378.94, 567.99 and 162.28 is: 243.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.94 : 567.99 = 162.28 : x
  2. Step 2: Convert to fraction form
    378.94/567.99 = 162.28/x
  3. Step 3: Cross multiply
    378.94x = 567.99 × 162.28
  4. Step 4: Simplify right side
    378.94x = 92,173.42
  5. Step 5: Solve for x
    x = 92,173.42/378.94
  6. Step 6: Final answer
    x = 243.24

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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.