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Finding the Fourth Proportional to 329.92, 451.98 and 317.59

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Solution

The fourth proportional to 329.92, 451.98 and 317.59 is: 435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.92 : 451.98 = 317.59 : x
  2. Step 2: Convert to fraction form
    329.92/451.98 = 317.59/x
  3. Step 3: Cross multiply
    329.92x = 451.98 × 317.59
  4. Step 4: Simplify right side
    329.92x = 143,544.33
  5. Step 5: Solve for x
    x = 143,544.33/329.92
  6. Step 6: Final answer
    x = 435.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.