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Finding the Fourth Proportional to 336.48, 464.38 and 189.15

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Solution

The fourth proportional to 336.48, 464.38 and 189.15 is: 261.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.48 : 464.38 = 189.15 : x
  2. Step 2: Convert to fraction form
    336.48/464.38 = 189.15/x
  3. Step 3: Cross multiply
    336.48x = 464.38 × 189.15
  4. Step 4: Simplify right side
    336.48x = 87,837.48
  5. Step 5: Solve for x
    x = 87,837.48/336.48
  6. Step 6: Final answer
    x = 261.05

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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.