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Finding the Fourth Proportional to 483.72, 667.68 and 328.56

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Solution

The fourth proportional to 483.72, 667.68 and 328.56 is: 453.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.72 : 667.68 = 328.56 : x
  2. Step 2: Convert to fraction form
    483.72/667.68 = 328.56/x
  3. Step 3: Cross multiply
    483.72x = 667.68 × 328.56
  4. Step 4: Simplify right side
    483.72x = 219,372.94
  5. Step 5: Solve for x
    x = 219,372.94/483.72
  6. Step 6: Final answer
    x = 453.51

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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.