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Finding the Fourth Proportional to 277.58, 383.09 and 161.17

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Solution

The fourth proportional to 277.58, 383.09 and 161.17 is: 222.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.58 : 383.09 = 161.17 : x
  2. Step 2: Convert to fraction form
    277.58/383.09 = 161.17/x
  3. Step 3: Cross multiply
    277.58x = 383.09 × 161.17
  4. Step 4: Simplify right side
    277.58x = 61,740.85
  5. Step 5: Solve for x
    x = 61,740.85/277.58
  6. Step 6: Final answer
    x = 222.42

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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.