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Finding the Fourth Proportional to 162.20, 223.88 and 104.02

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Solution

The fourth proportional to 162.20, 223.88 and 104.02 is: 143.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.20 : 223.88 = 104.02 : x
  2. Step 2: Convert to fraction form
    162.20/223.88 = 104.02/x
  3. Step 3: Cross multiply
    162.20x = 223.88 × 104.02
  4. Step 4: Simplify right side
    162.20x = 23,288.00
  5. Step 5: Solve for x
    x = 23,288.00/162.20
  6. Step 6: Final answer
    x = 143.58

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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.