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Finding the Fourth Proportional to 164.24, 223.52 and 162.80

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Solution

The fourth proportional to 164.24, 223.52 and 162.80 is: 221.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.24 : 223.52 = 162.80 : x
  2. Step 2: Convert to fraction form
    164.24/223.52 = 162.80/x
  3. Step 3: Cross multiply
    164.24x = 223.52 × 162.80
  4. Step 4: Simplify right side
    164.24x = 36,389.06
  5. Step 5: Solve for x
    x = 36,389.06/164.24
  6. Step 6: Final answer
    x = 221.56

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.