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Finding the Fourth Proportional to 326.55, 450.63 and 186.63

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Solution

The fourth proportional to 326.55, 450.63 and 186.63 is: 257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.55 : 450.63 = 186.63 : x
  2. Step 2: Convert to fraction form
    326.55/450.63 = 186.63/x
  3. Step 3: Cross multiply
    326.55x = 450.63 × 186.63
  4. Step 4: Simplify right side
    326.55x = 84,101.08
  5. Step 5: Solve for x
    x = 84,101.08/326.55
  6. Step 6: Final answer
    x = 257.54

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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.