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Finding the Fourth Proportional to 328.70, 456.72 and 325.27

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Solution

The fourth proportional to 328.70, 456.72 and 325.27 is: 451.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.70 : 456.72 = 325.27 : x
  2. Step 2: Convert to fraction form
    328.70/456.72 = 325.27/x
  3. Step 3: Cross multiply
    328.70x = 456.72 × 325.27
  4. Step 4: Simplify right side
    328.70x = 148,558.05
  5. Step 5: Solve for x
    x = 148,558.05/328.70
  6. Step 6: Final answer
    x = 451.96

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.