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Finding the Fourth Proportional to 339.01, 505.05 and 326.62

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Solution

The fourth proportional to 339.01, 505.05 and 326.62 is: 486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.01 : 505.05 = 326.62 : x
  2. Step 2: Convert to fraction form
    339.01/505.05 = 326.62/x
  3. Step 3: Cross multiply
    339.01x = 505.05 × 326.62
  4. Step 4: Simplify right side
    339.01x = 164,959.43
  5. Step 5: Solve for x
    x = 164,959.43/339.01
  6. Step 6: Final answer
    x = 486.59

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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.