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Finding the Fourth Proportional to 702.82, 971.22 and 516.52

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Solution

The fourth proportional to 702.82, 971.22 and 516.52 is: 713.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.82 : 971.22 = 516.52 : x
  2. Step 2: Convert to fraction form
    702.82/971.22 = 516.52/x
  3. Step 3: Cross multiply
    702.82x = 971.22 × 516.52
  4. Step 4: Simplify right side
    702.82x = 501,654.55
  5. Step 5: Solve for x
    x = 501,654.55/702.82
  6. Step 6: Final answer
    x = 713.77

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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.