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Finding the Fourth Proportional to 162.00, 242.77 and 80.76

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Solution

The fourth proportional to 162.00, 242.77 and 80.76 is: 121.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.00 : 242.77 = 80.76 : x
  2. Step 2: Convert to fraction form
    162.00/242.77 = 80.76/x
  3. Step 3: Cross multiply
    162.00x = 242.77 × 80.76
  4. Step 4: Simplify right side
    162.00x = 19,604.49
  5. Step 5: Solve for x
    x = 19,604.49/162.00
  6. Step 6: Final answer
    x = 121.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.