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Finding the Fourth Proportional to 908.06, 1,360.67 and 517.57

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Solution

The fourth proportional to 908.06, 1,360.67 and 517.57 is: 775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.06 : 1,360.67 = 517.57 : x
  2. Step 2: Convert to fraction form
    908.06/1,360.67 = 517.57/x
  3. Step 3: Cross multiply
    908.06x = 1,360.67 × 517.57
  4. Step 4: Simplify right side
    908.06x = 704,235.98
  5. Step 5: Solve for x
    x = 704,235.98/908.06
  6. Step 6: Final answer
    x = 775.54

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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.