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Finding the Fourth Proportional to 308.68, 425.86 and 184.35

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Solution

The fourth proportional to 308.68, 425.86 and 184.35 is: 254.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.68 : 425.86 = 184.35 : x
  2. Step 2: Convert to fraction form
    308.68/425.86 = 184.35/x
  3. Step 3: Cross multiply
    308.68x = 425.86 × 184.35
  4. Step 4: Simplify right side
    308.68x = 78,507.29
  5. Step 5: Solve for x
    x = 78,507.29/308.68
  6. Step 6: Final answer
    x = 254.33

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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.