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Finding the Fourth Proportional to 77.04, 116.01 and 76.23

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Solution

The fourth proportional to 77.04, 116.01 and 76.23 is: 114.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.04 : 116.01 = 76.23 : x
  2. Step 2: Convert to fraction form
    77.04/116.01 = 76.23/x
  3. Step 3: Cross multiply
    77.04x = 116.01 × 76.23
  4. Step 4: Simplify right side
    77.04x = 8,843.44
  5. Step 5: Solve for x
    x = 8,843.44/77.04
  6. Step 6: Final answer
    x = 114.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.