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Finding the Fourth Proportional to 516.70, 712.48 and 411.58

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Solution

The fourth proportional to 516.70, 712.48 and 411.58 is: 567.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.70 : 712.48 = 411.58 : x
  2. Step 2: Convert to fraction form
    516.70/712.48 = 411.58/x
  3. Step 3: Cross multiply
    516.70x = 712.48 × 411.58
  4. Step 4: Simplify right side
    516.70x = 293,242.52
  5. Step 5: Solve for x
    x = 293,242.52/516.70
  6. Step 6: Final answer
    x = 567.53

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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.