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Finding the Fourth Proportional to 277.48, 383.28 and 211.84

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Solution

The fourth proportional to 277.48, 383.28 and 211.84 is: 292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.48 : 383.28 = 211.84 : x
  2. Step 2: Convert to fraction form
    277.48/383.28 = 211.84/x
  3. Step 3: Cross multiply
    277.48x = 383.28 × 211.84
  4. Step 4: Simplify right side
    277.48x = 81,194.04
  5. Step 5: Solve for x
    x = 81,194.04/277.48
  6. Step 6: Final answer
    x = 292.61

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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.