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Finding the Fourth Proportional to 246.21, 369.47 and 191.35

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Solution

The fourth proportional to 246.21, 369.47 and 191.35 is: 287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.21 : 369.47 = 191.35 : x
  2. Step 2: Convert to fraction form
    246.21/369.47 = 191.35/x
  3. Step 3: Cross multiply
    246.21x = 369.47 × 191.35
  4. Step 4: Simplify right side
    246.21x = 70,698.08
  5. Step 5: Solve for x
    x = 70,698.08/246.21
  6. Step 6: Final answer
    x = 287.15

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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.