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Finding the Fourth Proportional to 260.50, 359.16 and 208.22

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Solution

The fourth proportional to 260.50, 359.16 and 208.22 is: 287.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.50 : 359.16 = 208.22 : x
  2. Step 2: Convert to fraction form
    260.50/359.16 = 208.22/x
  3. Step 3: Cross multiply
    260.50x = 359.16 × 208.22
  4. Step 4: Simplify right side
    260.50x = 74,784.30
  5. Step 5: Solve for x
    x = 74,784.30/260.50
  6. Step 6: Final answer
    x = 287.08

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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.