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Finding the Fourth Proportional to 260.55, 388.53 and 245.97

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Solution

The fourth proportional to 260.55, 388.53 and 245.97 is: 366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.55 : 388.53 = 245.97 : x
  2. Step 2: Convert to fraction form
    260.55/388.53 = 245.97/x
  3. Step 3: Cross multiply
    260.55x = 388.53 × 245.97
  4. Step 4: Simplify right side
    260.55x = 95,566.72
  5. Step 5: Solve for x
    x = 95,566.72/260.55
  6. Step 6: Final answer
    x = 366.79

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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.