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Finding the Fourth Proportional to 328.31, 450.56 and 326.77

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Solution

The fourth proportional to 328.31, 450.56 and 326.77 is: 448.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.31 : 450.56 = 326.77 : x
  2. Step 2: Convert to fraction form
    328.31/450.56 = 326.77/x
  3. Step 3: Cross multiply
    328.31x = 450.56 × 326.77
  4. Step 4: Simplify right side
    328.31x = 147,227.59
  5. Step 5: Solve for x
    x = 147,227.59/328.31
  6. Step 6: Final answer
    x = 448.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.