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Finding the Fourth Proportional to 75.60, 103.60 and 73.52

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Solution

The fourth proportional to 75.60, 103.60 and 73.52 is: 100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.60 : 103.60 = 73.52 : x
  2. Step 2: Convert to fraction form
    75.60/103.60 = 73.52/x
  3. Step 3: Cross multiply
    75.60x = 103.60 × 73.52
  4. Step 4: Simplify right side
    75.60x = 7,616.67
  5. Step 5: Solve for x
    x = 7,616.67/75.60
  6. Step 6: Final answer
    x = 100.75

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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.