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Finding the Fourth Proportional to 336.41, 464.16 and 189

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Solution

The fourth proportional to 336.41, 464.16 and 189 is: 260.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.41 : 464.16 = 189 : x
  2. Step 2: Convert to fraction form
    336.41/464.16 = 189/x
  3. Step 3: Cross multiply
    336.41x = 464.16 × 189
  4. Step 4: Simplify right side
    336.41x = 87,726.24
  5. Step 5: Solve for x
    x = 87,726.24/336.41
  6. Step 6: Final answer
    x = 260.77

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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.