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Finding the Fourth Proportional to 162.08, 223.56 and 112.96

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Solution

The fourth proportional to 162.08, 223.56 and 112.96 is: 155.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.08 : 223.56 = 112.96 : x
  2. Step 2: Convert to fraction form
    162.08/223.56 = 112.96/x
  3. Step 3: Cross multiply
    162.08x = 223.56 × 112.96
  4. Step 4: Simplify right side
    162.08x = 25,253.34
  5. Step 5: Solve for x
    x = 25,253.34/162.08
  6. Step 6: Final answer
    x = 155.81

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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.