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Finding the Fourth Proportional to 75.74, 104.29 and 58.27

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Solution

The fourth proportional to 75.74, 104.29 and 58.27 is: 80.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.74 : 104.29 = 58.27 : x
  2. Step 2: Convert to fraction form
    75.74/104.29 = 58.27/x
  3. Step 3: Cross multiply
    75.74x = 104.29 × 58.27
  4. Step 4: Simplify right side
    75.74x = 6,076.98
  5. Step 5: Solve for x
    x = 6,076.98/75.74
  6. Step 6: Final answer
    x = 80.23

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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.