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Finding the Fourth Proportional to 306.89, 460.32 and 218.66

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Solution

The fourth proportional to 306.89, 460.32 and 218.66 is: 327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.89 : 460.32 = 218.66 : x
  2. Step 2: Convert to fraction form
    306.89/460.32 = 218.66/x
  3. Step 3: Cross multiply
    306.89x = 460.32 × 218.66
  4. Step 4: Simplify right side
    306.89x = 100,651.27
  5. Step 5: Solve for x
    x = 100,651.27/306.89
  6. Step 6: Final answer
    x = 327.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.