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Finding the Fourth Proportional to 82.01, 113.00 and 79.58

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Solution

The fourth proportional to 82.01, 113.00 and 79.58 is: 109.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.01 : 113.00 = 79.58 : x
  2. Step 2: Convert to fraction form
    82.01/113.00 = 79.58/x
  3. Step 3: Cross multiply
    82.01x = 113.00 × 79.58
  4. Step 4: Simplify right side
    82.01x = 8,992.42
  5. Step 5: Solve for x
    x = 8,992.42/82.01
  6. Step 6: Final answer
    x = 109.65

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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.