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Finding the Fourth Proportional to 259.98, 388.53 and 223.39

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Solution

The fourth proportional to 259.98, 388.53 and 223.39 is: 333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.98 : 388.53 = 223.39 : x
  2. Step 2: Convert to fraction form
    259.98/388.53 = 223.39/x
  3. Step 3: Cross multiply
    259.98x = 388.53 × 223.39
  4. Step 4: Simplify right side
    259.98x = 86,794.20
  5. Step 5: Solve for x
    x = 86,794.20/259.98
  6. Step 6: Final answer
    x = 333.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.