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Finding the Fourth Proportional to 260.35, 359.02 and 220.96

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Solution

The fourth proportional to 260.35, 359.02 and 220.96 is: 304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.35 : 359.02 = 220.96 : x
  2. Step 2: Convert to fraction form
    260.35/359.02 = 220.96/x
  3. Step 3: Cross multiply
    260.35x = 359.02 × 220.96
  4. Step 4: Simplify right side
    260.35x = 79,327.95
  5. Step 5: Solve for x
    x = 79,327.95/260.35
  6. Step 6: Final answer
    x = 304.70

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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.