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Finding the Fourth Proportional to 73.05, 100.79 and 58.53

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Solution

The fourth proportional to 73.05, 100.79 and 58.53 is: 80.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.05 : 100.79 = 58.53 : x
  2. Step 2: Convert to fraction form
    73.05/100.79 = 58.53/x
  3. Step 3: Cross multiply
    73.05x = 100.79 × 58.53
  4. Step 4: Simplify right side
    73.05x = 5,898.95
  5. Step 5: Solve for x
    x = 5,898.95/73.05
  6. Step 6: Final answer
    x = 80.75

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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.