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Finding the Fourth Proportional to 1,065.21, 1,596.41 and 516.63

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Solution

The fourth proportional to 1,065.21, 1,596.41 and 516.63 is: 774.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.21 : 1,596.41 = 516.63 : x
  2. Step 2: Convert to fraction form
    1,065.21/1,596.41 = 516.63/x
  3. Step 3: Cross multiply
    1,065.21x = 1,596.41 × 516.63
  4. Step 4: Simplify right side
    1,065.21x = 824,753.30
  5. Step 5: Solve for x
    x = 824,753.30/1,065.21
  6. Step 6: Final answer
    x = 774.26

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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.