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Finding the Fourth Proportional to 308.75, 425.98 and 184.39

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Solution

The fourth proportional to 308.75, 425.98 and 184.39 is: 254.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.75 : 425.98 = 184.39 : x
  2. Step 2: Convert to fraction form
    308.75/425.98 = 184.39/x
  3. Step 3: Cross multiply
    308.75x = 425.98 × 184.39
  4. Step 4: Simplify right side
    308.75x = 78,548.36
  5. Step 5: Solve for x
    x = 78,548.36/308.75
  6. Step 6: Final answer
    x = 254.41

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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.