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Finding the Fourth Proportional to 248.80, 342.48 and 235.84

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Solution

The fourth proportional to 248.80, 342.48 and 235.84 is: 324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.80 : 342.48 = 235.84 : x
  2. Step 2: Convert to fraction form
    248.80/342.48 = 235.84/x
  3. Step 3: Cross multiply
    248.80x = 342.48 × 235.84
  4. Step 4: Simplify right side
    248.80x = 80,770.48
  5. Step 5: Solve for x
    x = 80,770.48/248.80
  6. Step 6: Final answer
    x = 324.64

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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.