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Finding the Fourth Proportional to 328.71, 453.61 and 181.33

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Solution

The fourth proportional to 328.71, 453.61 and 181.33 is: 250.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.71 : 453.61 = 181.33 : x
  2. Step 2: Convert to fraction form
    328.71/453.61 = 181.33/x
  3. Step 3: Cross multiply
    328.71x = 453.61 × 181.33
  4. Step 4: Simplify right side
    328.71x = 82,252.02
  5. Step 5: Solve for x
    x = 82,252.02/328.71
  6. Step 6: Final answer
    x = 250.23

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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.