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Finding the Fourth Proportional to 329.39, 453.52 and 290.02

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Solution

The fourth proportional to 329.39, 453.52 and 290.02 is: 399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.39 : 453.52 = 290.02 : x
  2. Step 2: Convert to fraction form
    329.39/453.52 = 290.02/x
  3. Step 3: Cross multiply
    329.39x = 453.52 × 290.02
  4. Step 4: Simplify right side
    329.39x = 131,528.32
  5. Step 5: Solve for x
    x = 131,528.32/329.39
  6. Step 6: Final answer
    x = 399.31

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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.