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Finding the Fourth Proportional to 122.68, 184.05 and 58.60

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Solution

The fourth proportional to 122.68, 184.05 and 58.60 is: 87.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.68 : 184.05 = 58.60 : x
  2. Step 2: Convert to fraction form
    122.68/184.05 = 58.60/x
  3. Step 3: Cross multiply
    122.68x = 184.05 × 58.60
  4. Step 4: Simplify right side
    122.68x = 10,785.33
  5. Step 5: Solve for x
    x = 10,785.33/122.68
  6. Step 6: Final answer
    x = 87.91

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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.