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Finding the Fourth Proportional to 184.06, 253.96 and 121.99

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Solution

The fourth proportional to 184.06, 253.96 and 121.99 is: 168.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.06 : 253.96 = 121.99 : x
  2. Step 2: Convert to fraction form
    184.06/253.96 = 121.99/x
  3. Step 3: Cross multiply
    184.06x = 253.96 × 121.99
  4. Step 4: Simplify right side
    184.06x = 30,980.58
  5. Step 5: Solve for x
    x = 30,980.58/184.06
  6. Step 6: Final answer
    x = 168.32

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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.