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Finding the Fourth Proportional to 162.96, 223.28 and 160.94

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Solution

The fourth proportional to 162.96, 223.28 and 160.94 is: 220.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.96 : 223.28 = 160.94 : x
  2. Step 2: Convert to fraction form
    162.96/223.28 = 160.94/x
  3. Step 3: Cross multiply
    162.96x = 223.28 × 160.94
  4. Step 4: Simplify right side
    162.96x = 35,932.76
  5. Step 5: Solve for x
    x = 35,932.76/162.96
  6. Step 6: Final answer
    x = 220.50

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.