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Finding the Fourth Proportional to 164.20, 251.13 and 164.20

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Solution

The fourth proportional to 164.20, 251.13 and 164.20 is: 251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.20 : 251.13 = 164.20 : x
  2. Step 2: Convert to fraction form
    164.20/251.13 = 164.20/x
  3. Step 3: Cross multiply
    164.20x = 251.13 × 164.20
  4. Step 4: Simplify right side
    164.20x = 41,235.55
  5. Step 5: Solve for x
    x = 41,235.55/164.20
  6. Step 6: Final answer
    x = 251.13

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.