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Finding the Fourth Proportional to 246.86, 369.64 and 189.90

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Solution

The fourth proportional to 246.86, 369.64 and 189.90 is: 284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.86 : 369.64 = 189.90 : x
  2. Step 2: Convert to fraction form
    246.86/369.64 = 189.90/x
  3. Step 3: Cross multiply
    246.86x = 369.64 × 189.90
  4. Step 4: Simplify right side
    246.86x = 70,194.64
  5. Step 5: Solve for x
    x = 70,194.64/246.86
  6. Step 6: Final answer
    x = 284.35

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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.