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Finding the Fourth Proportional to 260.90, 357.91 and 245.18

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Solution

The fourth proportional to 260.90, 357.91 and 245.18 is: 336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.90 : 357.91 = 245.18 : x
  2. Step 2: Convert to fraction form
    260.90/357.91 = 245.18/x
  3. Step 3: Cross multiply
    260.90x = 357.91 × 245.18
  4. Step 4: Simplify right side
    260.90x = 87,752.95
  5. Step 5: Solve for x
    x = 87,752.95/260.90
  6. Step 6: Final answer
    x = 336.34

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.