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Finding the Fourth Proportional to 191.94, 287.93 and 82.23

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Solution

The fourth proportional to 191.94, 287.93 and 82.23 is: 123.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.94 : 287.93 = 82.23 : x
  2. Step 2: Convert to fraction form
    191.94/287.93 = 82.23/x
  3. Step 3: Cross multiply
    191.94x = 287.93 × 82.23
  4. Step 4: Simplify right side
    191.94x = 23,676.48
  5. Step 5: Solve for x
    x = 23,676.48/191.94
  6. Step 6: Final answer
    x = 123.35

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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.