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Finding the Fourth Proportional to 353.97, 528.36 and 325.08

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Solution

The fourth proportional to 353.97, 528.36 and 325.08 is: 485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.97 : 528.36 = 325.08 : x
  2. Step 2: Convert to fraction form
    353.97/528.36 = 325.08/x
  3. Step 3: Cross multiply
    353.97x = 528.36 × 325.08
  4. Step 4: Simplify right side
    353.97x = 171,759.27
  5. Step 5: Solve for x
    x = 171,759.27/353.97
  6. Step 6: Final answer
    x = 485.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.