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Finding the Fourth Proportional to 162.83, 224.64 and 121.41

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Solution

The fourth proportional to 162.83, 224.64 and 121.41 is: 167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.83 : 224.64 = 121.41 : x
  2. Step 2: Convert to fraction form
    162.83/224.64 = 121.41/x
  3. Step 3: Cross multiply
    162.83x = 224.64 × 121.41
  4. Step 4: Simplify right side
    162.83x = 27,273.54
  5. Step 5: Solve for x
    x = 27,273.54/162.83
  6. Step 6: Final answer
    x = 167.50

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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.