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Finding the Fourth Proportional to 328.34, 453.04 and 254.56

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Solution

The fourth proportional to 328.34, 453.04 and 254.56 is: 351.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.34 : 453.04 = 254.56 : x
  2. Step 2: Convert to fraction form
    328.34/453.04 = 254.56/x
  3. Step 3: Cross multiply
    328.34x = 453.04 × 254.56
  4. Step 4: Simplify right side
    328.34x = 115,325.86
  5. Step 5: Solve for x
    x = 115,325.86/328.34
  6. Step 6: Final answer
    x = 351.24

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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.