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Finding the Fourth Proportional to 277.38, 382.77 and 172.47

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Solution

The fourth proportional to 277.38, 382.77 and 172.47 is: 238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.38 : 382.77 = 172.47 : x
  2. Step 2: Convert to fraction form
    277.38/382.77 = 172.47/x
  3. Step 3: Cross multiply
    277.38x = 382.77 × 172.47
  4. Step 4: Simplify right side
    277.38x = 66,016.34
  5. Step 5: Solve for x
    x = 66,016.34/277.38
  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.