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Finding the Fourth Proportional to 132, 183.39 and 130.74

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Solution

The fourth proportional to 132, 183.39 and 130.74 is: 181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    132 : 183.39 = 130.74 : x
  2. Step 2: Convert to fraction form
    132/183.39 = 130.74/x
  3. Step 3: Cross multiply
    132x = 183.39 × 130.74
  4. Step 4: Simplify right side
    132x = 23,976.41
  5. Step 5: Solve for x
    x = 23,976.41/132
  6. Step 6: Final answer
    x = 181.64

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.