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Finding the Fourth Proportional to 308.72, 425.94 and 184.32

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Solution

The fourth proportional to 308.72, 425.94 and 184.32 is: 254.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.72 : 425.94 = 184.32 : x
  2. Step 2: Convert to fraction form
    308.72/425.94 = 184.32/x
  3. Step 3: Cross multiply
    308.72x = 425.94 × 184.32
  4. Step 4: Simplify right side
    308.72x = 78,509.26
  5. Step 5: Solve for x
    x = 78,509.26/308.72
  6. Step 6: Final answer
    x = 254.31

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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.