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Finding the Fourth Proportional to 908.11, 1,361.53 and 497.44

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Solution

The fourth proportional to 908.11, 1,361.53 and 497.44 is: 745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.11 : 1,361.53 = 497.44 : x
  2. Step 2: Convert to fraction form
    908.11/1,361.53 = 497.44/x
  3. Step 3: Cross multiply
    908.11x = 1,361.53 × 497.44
  4. Step 4: Simplify right side
    908.11x = 677,279.48
  5. Step 5: Solve for x
    x = 677,279.48/908.11
  6. Step 6: Final answer
    x = 745.81

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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.