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Finding the Fourth Proportional to 277.16, 382.38 and 178.88

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Solution

The fourth proportional to 277.16, 382.38 and 178.88 is: 246.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.16 : 382.38 = 178.88 : x
  2. Step 2: Convert to fraction form
    277.16/382.38 = 178.88/x
  3. Step 3: Cross multiply
    277.16x = 382.38 × 178.88
  4. Step 4: Simplify right side
    277.16x = 68,400.13
  5. Step 5: Solve for x
    x = 68,400.13/277.16
  6. Step 6: Final answer
    x = 246.79

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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.