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Finding the Fourth Proportional to 164.86, 227.43 and 102.70

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Solution

The fourth proportional to 164.86, 227.43 and 102.70 is: 141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.86 : 227.43 = 102.70 : x
  2. Step 2: Convert to fraction form
    164.86/227.43 = 102.70/x
  3. Step 3: Cross multiply
    164.86x = 227.43 × 102.70
  4. Step 4: Simplify right side
    164.86x = 23,357.06
  5. Step 5: Solve for x
    x = 23,357.06/164.86
  6. Step 6: Final answer
    x = 141.68

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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.