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Finding the Fourth Proportional to 328.88, 491.96 and 301.25

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Solution

The fourth proportional to 328.88, 491.96 and 301.25 is: 450.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.88 : 491.96 = 301.25 : x
  2. Step 2: Convert to fraction form
    328.88/491.96 = 301.25/x
  3. Step 3: Cross multiply
    328.88x = 491.96 × 301.25
  4. Step 4: Simplify right side
    328.88x = 148,198.98
  5. Step 5: Solve for x
    x = 148,198.98/328.88
  6. Step 6: Final answer
    x = 450.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.