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Finding the Fourth Proportional to 326.10, 449.97 and 186.20

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Solution

The fourth proportional to 326.10, 449.97 and 186.20 is: 256.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.10 : 449.97 = 186.20 : x
  2. Step 2: Convert to fraction form
    326.10/449.97 = 186.20/x
  3. Step 3: Cross multiply
    326.10x = 449.97 × 186.20
  4. Step 4: Simplify right side
    326.10x = 83,784.84
  5. Step 5: Solve for x
    x = 83,784.84/326.10
  6. Step 6: Final answer
    x = 256.93

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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.