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Finding the Fourth Proportional to 259.98, 388.07 and 229.58

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Solution

The fourth proportional to 259.98, 388.07 and 229.58 is: 342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.98 : 388.07 = 229.58 : x
  2. Step 2: Convert to fraction form
    259.98/388.07 = 229.58/x
  3. Step 3: Cross multiply
    259.98x = 388.07 × 229.58
  4. Step 4: Simplify right side
    259.98x = 89,093.88
  5. Step 5: Solve for x
    x = 89,093.88/259.98
  6. Step 6: Final answer
    x = 342.69

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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.