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Finding the Fourth Proportional to 328.90, 453.89 and 181.55

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Solution

The fourth proportional to 328.90, 453.89 and 181.55 is: 250.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.90 : 453.89 = 181.55 : x
  2. Step 2: Convert to fraction form
    328.90/453.89 = 181.55/x
  3. Step 3: Cross multiply
    328.90x = 453.89 × 181.55
  4. Step 4: Simplify right side
    328.90x = 82,402.83
  5. Step 5: Solve for x
    x = 82,402.83/328.90
  6. Step 6: Final answer
    x = 250.54

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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.