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Finding the Fourth Proportional to 243.83, 336.43 and 178.22

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Solution

The fourth proportional to 243.83, 336.43 and 178.22 is: 245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.83 : 336.43 = 178.22 : x
  2. Step 2: Convert to fraction form
    243.83/336.43 = 178.22/x
  3. Step 3: Cross multiply
    243.83x = 336.43 × 178.22
  4. Step 4: Simplify right side
    243.83x = 59,959.62
  5. Step 5: Solve for x
    x = 59,959.62/243.83
  6. Step 6: Final answer
    x = 245.90

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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.