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Finding the Fourth Proportional to 185.49, 277.63 and 131.22

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Solution

The fourth proportional to 185.49, 277.63 and 131.22 is: 196.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.49 : 277.63 = 131.22 : x
  2. Step 2: Convert to fraction form
    185.49/277.63 = 131.22/x
  3. Step 3: Cross multiply
    185.49x = 277.63 × 131.22
  4. Step 4: Simplify right side
    185.49x = 36,430.28
  5. Step 5: Solve for x
    x = 36,430.28/185.49
  6. Step 6: Final answer
    x = 196.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.