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Finding the Fourth Proportional to 134.77, 202.87 and 122.20

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Solution

The fourth proportional to 134.77, 202.87 and 122.20 is: 183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.77 : 202.87 = 122.20 : x
  2. Step 2: Convert to fraction form
    134.77/202.87 = 122.20/x
  3. Step 3: Cross multiply
    134.77x = 202.87 × 122.20
  4. Step 4: Simplify right side
    134.77x = 24,790.71
  5. Step 5: Solve for x
    x = 24,790.71/134.77
  6. Step 6: Final answer
    x = 183.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.