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Finding the Fourth Proportional to 277.31, 382.73 and 172.44

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Solution

The fourth proportional to 277.31, 382.73 and 172.44 is: 238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.31 : 382.73 = 172.44 : x
  2. Step 2: Convert to fraction form
    277.31/382.73 = 172.44/x
  3. Step 3: Cross multiply
    277.31x = 382.73 × 172.44
  4. Step 4: Simplify right side
    277.31x = 65,998.39
  5. Step 5: Solve for x
    x = 65,998.39/277.31
  6. Step 6: Final answer
    x = 238.00

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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.