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Finding the Fourth Proportional to 329.64, 453.96 and 292.56

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Solution

The fourth proportional to 329.64, 453.96 and 292.56 is: 402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.64 : 453.96 = 292.56 : x
  2. Step 2: Convert to fraction form
    329.64/453.96 = 292.56/x
  3. Step 3: Cross multiply
    329.64x = 453.96 × 292.56
  4. Step 4: Simplify right side
    329.64x = 132,810.54
  5. Step 5: Solve for x
    x = 132,810.54/329.64
  6. Step 6: Final answer
    x = 402.90

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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.