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Finding the Fourth Proportional to 328.31, 453.05 and 180.92

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Solution

The fourth proportional to 328.31, 453.05 and 180.92 is: 249.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.31 : 453.05 = 180.92 : x
  2. Step 2: Convert to fraction form
    328.31/453.05 = 180.92/x
  3. Step 3: Cross multiply
    328.31x = 453.05 × 180.92
  4. Step 4: Simplify right side
    328.31x = 81,965.81
  5. Step 5: Solve for x
    x = 81,965.81/328.31
  6. Step 6: Final answer
    x = 249.66

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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.