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Finding the Fourth Proportional to 329.74, 453.76 and 298.69

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Solution

The fourth proportional to 329.74, 453.76 and 298.69 is: 411.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.74 : 453.76 = 298.69 : x
  2. Step 2: Convert to fraction form
    329.74/453.76 = 298.69/x
  3. Step 3: Cross multiply
    329.74x = 453.76 × 298.69
  4. Step 4: Simplify right side
    329.74x = 135,531.69
  5. Step 5: Solve for x
    x = 135,531.69/329.74
  6. Step 6: Final answer
    x = 411.03

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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.