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Finding the Fourth Proportional to 713.44, 984.64 and 517.60

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Solution

The fourth proportional to 713.44, 984.64 and 517.60 is: 714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.44 : 984.64 = 517.60 : x
  2. Step 2: Convert to fraction form
    713.44/984.64 = 517.60/x
  3. Step 3: Cross multiply
    713.44x = 984.64 × 517.60
  4. Step 4: Simplify right side
    713.44x = 509,649.66
  5. Step 5: Solve for x
    x = 509,649.66/713.44
  6. Step 6: Final answer
    x = 714.36

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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.