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Finding the Fourth Proportional to 164.66, 246.77 and 121.50

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Solution

The fourth proportional to 164.66, 246.77 and 121.50 is: 182.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.66 : 246.77 = 121.50 : x
  2. Step 2: Convert to fraction form
    164.66/246.77 = 121.50/x
  3. Step 3: Cross multiply
    164.66x = 246.77 × 121.50
  4. Step 4: Simplify right side
    164.66x = 29,981.95
  5. Step 5: Solve for x
    x = 29,981.95/164.66
  6. Step 6: Final answer
    x = 182.09

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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.