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Finding the Fourth Proportional to 277.57, 382.97 and 172.75

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Solution

The fourth proportional to 277.57, 382.97 and 172.75 is: 238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.57 : 382.97 = 172.75 : x
  2. Step 2: Convert to fraction form
    277.57/382.97 = 172.75/x
  3. Step 3: Cross multiply
    277.57x = 382.97 × 172.75
  4. Step 4: Simplify right side
    277.57x = 66,158.07
  5. Step 5: Solve for x
    x = 66,158.07/277.57
  6. Step 6: Final answer
    x = 238.35

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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.