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Finding the Fourth Proportional to 277.76, 382.63 and 194.70

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Solution

The fourth proportional to 277.76, 382.63 and 194.70 is: 268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.76 : 382.63 = 194.70 : x
  2. Step 2: Convert to fraction form
    277.76/382.63 = 194.70/x
  3. Step 3: Cross multiply
    277.76x = 382.63 × 194.70
  4. Step 4: Simplify right side
    277.76x = 74,497.57
  5. Step 5: Solve for x
    x = 74,497.57/277.76
  6. Step 6: Final answer
    x = 268.21

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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.