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Finding the Fourth Proportional to 336.84, 464.90 and 238.60

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Solution

The fourth proportional to 336.84, 464.90 and 238.60 is: 329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.84 : 464.90 = 238.60 : x
  2. Step 2: Convert to fraction form
    336.84/464.90 = 238.60/x
  3. Step 3: Cross multiply
    336.84x = 464.90 × 238.60
  4. Step 4: Simplify right side
    336.84x = 110,925.14
  5. Step 5: Solve for x
    x = 110,925.14/336.84
  6. Step 6: Final answer
    x = 329.31

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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.