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Finding the Fourth Proportional to 185.02, 255.39 and 122.99

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Solution

The fourth proportional to 185.02, 255.39 and 122.99 is: 169.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.02 : 255.39 = 122.99 : x
  2. Step 2: Convert to fraction form
    185.02/255.39 = 122.99/x
  3. Step 3: Cross multiply
    185.02x = 255.39 × 122.99
  4. Step 4: Simplify right side
    185.02x = 31,410.42
  5. Step 5: Solve for x
    x = 31,410.42/185.02
  6. Step 6: Final answer
    x = 169.77

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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.