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Finding the Fourth Proportional to 260.86, 358.94 and 254.71

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Solution

The fourth proportional to 260.86, 358.94 and 254.71 is: 350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.86 : 358.94 = 254.71 : x
  2. Step 2: Convert to fraction form
    260.86/358.94 = 254.71/x
  3. Step 3: Cross multiply
    260.86x = 358.94 × 254.71
  4. Step 4: Simplify right side
    260.86x = 91,423.44
  5. Step 5: Solve for x
    x = 91,423.44/260.86
  6. Step 6: Final answer
    x = 350.47

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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.