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Finding the Fourth Proportional to 80.83, 121.29 and 62.83

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Solution

The fourth proportional to 80.83, 121.29 and 62.83 is: 94.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.83 : 121.29 = 62.83 : x
  2. Step 2: Convert to fraction form
    80.83/121.29 = 62.83/x
  3. Step 3: Cross multiply
    80.83x = 121.29 × 62.83
  4. Step 4: Simplify right side
    80.83x = 7,620.65
  5. Step 5: Solve for x
    x = 7,620.65/80.83
  6. Step 6: Final answer
    x = 94.28

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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.