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Finding the Fourth Proportional to 277.59, 382.80 and 203.49

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Solution

The fourth proportional to 277.59, 382.80 and 203.49 is: 280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.59 : 382.80 = 203.49 : x
  2. Step 2: Convert to fraction form
    277.59/382.80 = 203.49/x
  3. Step 3: Cross multiply
    277.59x = 382.80 × 203.49
  4. Step 4: Simplify right side
    277.59x = 77,895.97
  5. Step 5: Solve for x
    x = 77,895.97/277.59
  6. Step 6: Final answer
    x = 280.62

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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.