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Finding the Fourth Proportional to 893.26, 1,232.84 and 520.45

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Solution

The fourth proportional to 893.26, 1,232.84 and 520.45 is: 718.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.26 : 1,232.84 = 520.45 : x
  2. Step 2: Convert to fraction form
    893.26/1,232.84 = 520.45/x
  3. Step 3: Cross multiply
    893.26x = 1,232.84 × 520.45
  4. Step 4: Simplify right side
    893.26x = 641,631.58
  5. Step 5: Solve for x
    x = 641,631.58/893.26
  6. Step 6: Final answer
    x = 718.31

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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.