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Finding the Fourth Proportional to 75.73, 103.60 and 75.43

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Solution

The fourth proportional to 75.73, 103.60 and 75.43 is: 103.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.73 : 103.60 = 75.43 : x
  2. Step 2: Convert to fraction form
    75.73/103.60 = 75.43/x
  3. Step 3: Cross multiply
    75.73x = 103.60 × 75.43
  4. Step 4: Simplify right side
    75.73x = 7,814.55
  5. Step 5: Solve for x
    x = 7,814.55/75.73
  6. Step 6: Final answer
    x = 103.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.