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Finding the Fourth Proportional to 245.69, 337.19 and 218.85

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Solution

The fourth proportional to 245.69, 337.19 and 218.85 is: 300.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.69 : 337.19 = 218.85 : x
  2. Step 2: Convert to fraction form
    245.69/337.19 = 218.85/x
  3. Step 3: Cross multiply
    245.69x = 337.19 × 218.85
  4. Step 4: Simplify right side
    245.69x = 73,794.58
  5. Step 5: Solve for x
    x = 73,794.58/245.69
  6. Step 6: Final answer
    x = 300.36

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.