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Finding the Fourth Proportional to 164.25, 226.53 and 98.71

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Solution

The fourth proportional to 164.25, 226.53 and 98.71 is: 136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.25 : 226.53 = 98.71 : x
  2. Step 2: Convert to fraction form
    164.25/226.53 = 98.71/x
  3. Step 3: Cross multiply
    164.25x = 226.53 × 98.71
  4. Step 4: Simplify right side
    164.25x = 22,360.21
  5. Step 5: Solve for x
    x = 22,360.21/164.25
  6. Step 6: Final answer
    x = 136.14

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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.