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Finding the Fourth Proportional to 716.52, 991.61 and 704.37

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Solution

The fourth proportional to 716.52, 991.61 and 704.37 is: 974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.52 : 991.61 = 704.37 : x
  2. Step 2: Convert to fraction form
    716.52/991.61 = 704.37/x
  3. Step 3: Cross multiply
    716.52x = 991.61 × 704.37
  4. Step 4: Simplify right side
    716.52x = 698,460.34
  5. Step 5: Solve for x
    x = 698,460.34/716.52
  6. Step 6: Final answer
    x = 974.80

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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.