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Finding the Fourth Proportional to 162.54, 222.81 and 159.72

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Solution

The fourth proportional to 162.54, 222.81 and 159.72 is: 218.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.54 : 222.81 = 159.72 : x
  2. Step 2: Convert to fraction form
    162.54/222.81 = 159.72/x
  3. Step 3: Cross multiply
    162.54x = 222.81 × 159.72
  4. Step 4: Simplify right side
    162.54x = 35,587.21
  5. Step 5: Solve for x
    x = 35,587.21/162.54
  6. Step 6: Final answer
    x = 218.94

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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.