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Finding the Fourth Proportional to 260.22, 359.70 and 211.32

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Solution

The fourth proportional to 260.22, 359.70 and 211.32 is: 292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.22 : 359.70 = 211.32 : x
  2. Step 2: Convert to fraction form
    260.22/359.70 = 211.32/x
  3. Step 3: Cross multiply
    260.22x = 359.70 × 211.32
  4. Step 4: Simplify right side
    260.22x = 76,011.80
  5. Step 5: Solve for x
    x = 76,011.80/260.22
  6. Step 6: Final answer
    x = 292.11

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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.