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Finding the Fourth Proportional to 73.38, 109.83 and 52.80

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Solution

The fourth proportional to 73.38, 109.83 and 52.80 is: 79.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.38 : 109.83 = 52.80 : x
  2. Step 2: Convert to fraction form
    73.38/109.83 = 52.80/x
  3. Step 3: Cross multiply
    73.38x = 109.83 × 52.80
  4. Step 4: Simplify right side
    73.38x = 5,799.02
  5. Step 5: Solve for x
    x = 5,799.02/73.38
  6. Step 6: Final answer
    x = 79.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.