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Finding the Fourth Proportional to 368.09, 507.68 and 326.12

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Solution

The fourth proportional to 368.09, 507.68 and 326.12 is: 449.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.09 : 507.68 = 326.12 : x
  2. Step 2: Convert to fraction form
    368.09/507.68 = 326.12/x
  3. Step 3: Cross multiply
    368.09x = 507.68 × 326.12
  4. Step 4: Simplify right side
    368.09x = 165,564.60
  5. Step 5: Solve for x
    x = 165,564.60/368.09
  6. Step 6: Final answer
    x = 449.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.