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Finding the Fourth Proportional to 716.12, 987.26 and 700.59

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Solution

The fourth proportional to 716.12, 987.26 and 700.59 is: 965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.12 : 987.26 = 700.59 : x
  2. Step 2: Convert to fraction form
    716.12/987.26 = 700.59/x
  3. Step 3: Cross multiply
    716.12x = 987.26 × 700.59
  4. Step 4: Simplify right side
    716.12x = 691,660.98
  5. Step 5: Solve for x
    x = 691,660.98/716.12
  6. Step 6: Final answer
    x = 965.85

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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.