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Finding the Fourth Proportional to 83.00, 123.66 and 80.06

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Solution

The fourth proportional to 83.00, 123.66 and 80.06 is: 119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.00 : 123.66 = 80.06 : x
  2. Step 2: Convert to fraction form
    83.00/123.66 = 80.06/x
  3. Step 3: Cross multiply
    83.00x = 123.66 × 80.06
  4. Step 4: Simplify right side
    83.00x = 9,899.60
  5. Step 5: Solve for x
    x = 9,899.60/83.00
  6. Step 6: Final answer
    x = 119.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.