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Finding the Fourth Proportional to 277.27, 382.71 and 159.31

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Solution

The fourth proportional to 277.27, 382.71 and 159.31 is: 219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.27 : 382.71 = 159.31 : x
  2. Step 2: Convert to fraction form
    277.27/382.71 = 159.31/x
  3. Step 3: Cross multiply
    277.27x = 382.71 × 159.31
  4. Step 4: Simplify right side
    277.27x = 60,970.61
  5. Step 5: Solve for x
    x = 60,970.61/277.27
  6. Step 6: Final answer
    x = 219.89

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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.