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Finding the Fourth Proportional to 277.73, 383.25 and 153.40

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Solution

The fourth proportional to 277.73, 383.25 and 153.40 is: 211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.73 : 383.25 = 153.40 : x
  2. Step 2: Convert to fraction form
    277.73/383.25 = 153.40/x
  3. Step 3: Cross multiply
    277.73x = 383.25 × 153.40
  4. Step 4: Simplify right side
    277.73x = 58,789.59
  5. Step 5: Solve for x
    x = 58,789.59/277.73
  6. Step 6: Final answer
    x = 211.68

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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.