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Finding the Fourth Proportional to 260.19, 359.06 and 143.75

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Solution

The fourth proportional to 260.19, 359.06 and 143.75 is: 198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.19 : 359.06 = 143.75 : x
  2. Step 2: Convert to fraction form
    260.19/359.06 = 143.75/x
  3. Step 3: Cross multiply
    260.19x = 359.06 × 143.75
  4. Step 4: Simplify right side
    260.19x = 51,614.88
  5. Step 5: Solve for x
    x = 51,614.88/260.19
  6. Step 6: Final answer
    x = 198.37

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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.