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Finding the Fourth Proportional to 328.92, 453.29 and 245.82

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Solution

The fourth proportional to 328.92, 453.29 and 245.82 is: 338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.92 : 453.29 = 245.82 : x
  2. Step 2: Convert to fraction form
    328.92/453.29 = 245.82/x
  3. Step 3: Cross multiply
    328.92x = 453.29 × 245.82
  4. Step 4: Simplify right side
    328.92x = 111,427.75
  5. Step 5: Solve for x
    x = 111,427.75/328.92
  6. Step 6: Final answer
    x = 338.77

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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.