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Finding the Fourth Proportional to 248.44, 342.48 and 213.31

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Solution

The fourth proportional to 248.44, 342.48 and 213.31 is: 294.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.44 : 342.48 = 213.31 : x
  2. Step 2: Convert to fraction form
    248.44/342.48 = 213.31/x
  3. Step 3: Cross multiply
    248.44x = 342.48 × 213.31
  4. Step 4: Simplify right side
    248.44x = 73,054.41
  5. Step 5: Solve for x
    x = 73,054.41/248.44
  6. Step 6: Final answer
    x = 294.05

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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.