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Finding the Fourth Proportional to 262.95, 363.18 and 189.38

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Solution

The fourth proportional to 262.95, 363.18 and 189.38 is: 261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.95 : 363.18 = 189.38 : x
  2. Step 2: Convert to fraction form
    262.95/363.18 = 189.38/x
  3. Step 3: Cross multiply
    262.95x = 363.18 × 189.38
  4. Step 4: Simplify right side
    262.95x = 68,779.03
  5. Step 5: Solve for x
    x = 68,779.03/262.95
  6. Step 6: Final answer
    x = 261.57

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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.