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Finding the Fourth Proportional to 76.06, 105.02 and 69.94

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Solution

The fourth proportional to 76.06, 105.02 and 69.94 is: 96.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76.06 : 105.02 = 69.94 : x
  2. Step 2: Convert to fraction form
    76.06/105.02 = 69.94/x
  3. Step 3: Cross multiply
    76.06x = 105.02 × 69.94
  4. Step 4: Simplify right side
    76.06x = 7,345.10
  5. Step 5: Solve for x
    x = 7,345.10/76.06
  6. Step 6: Final answer
    x = 96.57

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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.