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Finding the Fourth Proportional to 164.56, 246.78 and 103.29

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Solution

The fourth proportional to 164.56, 246.78 and 103.29 is: 154.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.56 : 246.78 = 103.29 : x
  2. Step 2: Convert to fraction form
    164.56/246.78 = 103.29/x
  3. Step 3: Cross multiply
    164.56x = 246.78 × 103.29
  4. Step 4: Simplify right side
    164.56x = 25,490.67
  5. Step 5: Solve for x
    x = 25,490.67/164.56
  6. Step 6: Final answer
    x = 154.91

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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.