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Finding the Fourth Proportional to 516.36, 712.58 and 283.49

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Solution

The fourth proportional to 516.36, 712.58 and 283.49 is: 391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.36 : 712.58 = 283.49 : x
  2. Step 2: Convert to fraction form
    516.36/712.58 = 283.49/x
  3. Step 3: Cross multiply
    516.36x = 712.58 × 283.49
  4. Step 4: Simplify right side
    516.36x = 202,004.32
  5. Step 5: Solve for x
    x = 202,004.32/516.36
  6. Step 6: Final answer
    x = 391.21

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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.