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Finding the Fourth Proportional to 537.80, 806.93 and 172.69

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Solution

The fourth proportional to 537.80, 806.93 and 172.69 is: 259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.80 : 806.93 = 172.69 : x
  2. Step 2: Convert to fraction form
    537.80/806.93 = 172.69/x
  3. Step 3: Cross multiply
    537.80x = 806.93 × 172.69
  4. Step 4: Simplify right side
    537.80x = 139,351.05
  5. Step 5: Solve for x
    x = 139,351.05/537.80
  6. Step 6: Final answer
    x = 259.11

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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.