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Finding the Fourth Proportional to 162.05, 223.45 and 120.05

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Solution

The fourth proportional to 162.05, 223.45 and 120.05 is: 165.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.05 : 223.45 = 120.05 : x
  2. Step 2: Convert to fraction form
    162.05/223.45 = 120.05/x
  3. Step 3: Cross multiply
    162.05x = 223.45 × 120.05
  4. Step 4: Simplify right side
    162.05x = 26,825.17
  5. Step 5: Solve for x
    x = 26,825.17/162.05
  6. Step 6: Final answer
    x = 165.54

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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.