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Finding the Fourth Proportional to 673.40, 927.42 and 517.88

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Solution

The fourth proportional to 673.40, 927.42 and 517.88 is: 713.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.40 : 927.42 = 517.88 : x
  2. Step 2: Convert to fraction form
    673.40/927.42 = 517.88/x
  3. Step 3: Cross multiply
    673.40x = 927.42 × 517.88
  4. Step 4: Simplify right side
    673.40x = 480,292.27
  5. Step 5: Solve for x
    x = 480,292.27/673.40
  6. Step 6: Final answer
    x = 713.23

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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.