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Finding the Fourth Proportional to 134.56, 185.56 and 82.80

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Solution

The fourth proportional to 134.56, 185.56 and 82.80 is: 114.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.56 : 185.56 = 82.80 : x
  2. Step 2: Convert to fraction form
    134.56/185.56 = 82.80/x
  3. Step 3: Cross multiply
    134.56x = 185.56 × 82.80
  4. Step 4: Simplify right side
    134.56x = 15,364.37
  5. Step 5: Solve for x
    x = 15,364.37/134.56
  6. Step 6: Final answer
    x = 114.18

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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.