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Finding the Fourth Proportional to 162.14, 223.53 and 158.69

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Solution

The fourth proportional to 162.14, 223.53 and 158.69 is: 218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.14 : 223.53 = 158.69 : x
  2. Step 2: Convert to fraction form
    162.14/223.53 = 158.69/x
  3. Step 3: Cross multiply
    162.14x = 223.53 × 158.69
  4. Step 4: Simplify right side
    162.14x = 35,471.98
  5. Step 5: Solve for x
    x = 35,471.98/162.14
  6. Step 6: Final answer
    x = 218.77

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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.