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Finding the Fourth Proportional to 328.98, 454.21 and 229.37

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Solution

The fourth proportional to 328.98, 454.21 and 229.37 is: 316.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.98 : 454.21 = 229.37 : x
  2. Step 2: Convert to fraction form
    328.98/454.21 = 229.37/x
  3. Step 3: Cross multiply
    328.98x = 454.21 × 229.37
  4. Step 4: Simplify right side
    328.98x = 104,179.30
  5. Step 5: Solve for x
    x = 104,179.30/328.98
  6. Step 6: Final answer
    x = 316.68

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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.