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Finding the Fourth Proportional to 326.34, 450.45 and 208.35

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Solution

The fourth proportional to 326.34, 450.45 and 208.35 is: 287.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.34 : 450.45 = 208.35 : x
  2. Step 2: Convert to fraction form
    326.34/450.45 = 208.35/x
  3. Step 3: Cross multiply
    326.34x = 450.45 × 208.35
  4. Step 4: Simplify right side
    326.34x = 93,851.26
  5. Step 5: Solve for x
    x = 93,851.26/326.34
  6. Step 6: Final answer
    x = 287.59

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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.