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Finding the Fourth Proportional to 185.79, 277.71 and 161.22

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Solution

The fourth proportional to 185.79, 277.71 and 161.22 is: 240.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.79 : 277.71 = 161.22 : x
  2. Step 2: Convert to fraction form
    185.79/277.71 = 161.22/x
  3. Step 3: Cross multiply
    185.79x = 277.71 × 161.22
  4. Step 4: Simplify right side
    185.79x = 44,772.41
  5. Step 5: Solve for x
    x = 44,772.41/185.79
  6. Step 6: Final answer
    x = 240.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.