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Finding the Fourth Proportional to 308.19, 425.25 and 190.07

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Solution

The fourth proportional to 308.19, 425.25 and 190.07 is: 262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.19 : 425.25 = 190.07 : x
  2. Step 2: Convert to fraction form
    308.19/425.25 = 190.07/x
  3. Step 3: Cross multiply
    308.19x = 425.25 × 190.07
  4. Step 4: Simplify right side
    308.19x = 80,827.93
  5. Step 5: Solve for x
    x = 80,827.93/308.19
  6. Step 6: Final answer
    x = 262.26

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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.