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Finding the Fourth Proportional to 238.60, 356.69 and 236.20

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Solution

The fourth proportional to 238.60, 356.69 and 236.20 is: 353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.60 : 356.69 = 236.20 : x
  2. Step 2: Convert to fraction form
    238.60/356.69 = 236.20/x
  3. Step 3: Cross multiply
    238.60x = 356.69 × 236.20
  4. Step 4: Simplify right side
    238.60x = 84,250.18
  5. Step 5: Solve for x
    x = 84,250.18/238.60
  6. Step 6: Final answer
    x = 353.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.