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Finding the Fourth Proportional to 622.36, 857.94 and 516.16

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Solution

The fourth proportional to 622.36, 857.94 and 516.16 is: 711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.36 : 857.94 = 516.16 : x
  2. Step 2: Convert to fraction form
    622.36/857.94 = 516.16/x
  3. Step 3: Cross multiply
    622.36x = 857.94 × 516.16
  4. Step 4: Simplify right side
    622.36x = 442,834.31
  5. Step 5: Solve for x
    x = 442,834.31/622.36
  6. Step 6: Final answer
    x = 711.54

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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.