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Finding the Fourth Proportional to 832.82, 1,149.22 and 459.80

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Solution

The fourth proportional to 832.82, 1,149.22 and 459.80 is: 634.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.82 : 1,149.22 = 459.80 : x
  2. Step 2: Convert to fraction form
    832.82/1,149.22 = 459.80/x
  3. Step 3: Cross multiply
    832.82x = 1,149.22 × 459.80
  4. Step 4: Simplify right side
    832.82x = 528,411.36
  5. Step 5: Solve for x
    x = 528,411.36/832.82
  6. Step 6: Final answer
    x = 634.48

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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.