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Finding the Fourth Proportional to 162, 223.60 and 118.32

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Solution

The fourth proportional to 162, 223.60 and 118.32 is: 163.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    162 : 223.60 = 118.32 : x
  2. Step 2: Convert to fraction form
    162/223.60 = 118.32/x
  3. Step 3: Cross multiply
    162x = 223.60 × 118.32
  4. Step 4: Simplify right side
    162x = 26,456.35
  5. Step 5: Solve for x
    x = 26,456.35/162
  6. Step 6: Final answer
    x = 163.31

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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.