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Finding the Fourth Proportional to 175.49, 263.33 and 72.85

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Solution

The fourth proportional to 175.49, 263.33 and 72.85 is: 109.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.49 : 263.33 = 72.85 : x
  2. Step 2: Convert to fraction form
    175.49/263.33 = 72.85/x
  3. Step 3: Cross multiply
    175.49x = 263.33 × 72.85
  4. Step 4: Simplify right side
    175.49x = 19,183.13
  5. Step 5: Solve for x
    x = 19,183.13/175.49
  6. Step 6: Final answer
    x = 109.31

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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.