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Finding the Fourth Proportional to 308.32, 425.50 and 168.45

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Solution

The fourth proportional to 308.32, 425.50 and 168.45 is: 232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.32 : 425.50 = 168.45 : x
  2. Step 2: Convert to fraction form
    308.32/425.50 = 168.45/x
  3. Step 3: Cross multiply
    308.32x = 425.50 × 168.45
  4. Step 4: Simplify right side
    308.32x = 71,675.48
  5. Step 5: Solve for x
    x = 71,675.48/308.32
  6. Step 6: Final answer
    x = 232.47

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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.