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Finding the Fourth Proportional to 122.53, 183.28 and 107.53

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Solution

The fourth proportional to 122.53, 183.28 and 107.53 is: 160.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.53 : 183.28 = 107.53 : x
  2. Step 2: Convert to fraction form
    122.53/183.28 = 107.53/x
  3. Step 3: Cross multiply
    122.53x = 183.28 × 107.53
  4. Step 4: Simplify right side
    122.53x = 19,708.10
  5. Step 5: Solve for x
    x = 19,708.10/122.53
  6. Step 6: Final answer
    x = 160.84

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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.