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Finding the Fourth Proportional to 277.17, 415.71 and 92.09

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Solution

The fourth proportional to 277.17, 415.71 and 92.09 is: 138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.17 : 415.71 = 92.09 : x
  2. Step 2: Convert to fraction form
    277.17/415.71 = 92.09/x
  3. Step 3: Cross multiply
    277.17x = 415.71 × 92.09
  4. Step 4: Simplify right side
    277.17x = 38,282.73
  5. Step 5: Solve for x
    x = 38,282.73/277.17
  6. Step 6: Final answer
    x = 138.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.