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Finding the Fourth Proportional to 308.35, 425.45 and 183.98

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Solution

The fourth proportional to 308.35, 425.45 and 183.98 is: 253.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.35 : 425.45 = 183.98 : x
  2. Step 2: Convert to fraction form
    308.35/425.45 = 183.98/x
  3. Step 3: Cross multiply
    308.35x = 425.45 × 183.98
  4. Step 4: Simplify right side
    308.35x = 78,275.39
  5. Step 5: Solve for x
    x = 78,275.39/308.35
  6. Step 6: Final answer
    x = 253.85

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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.