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Finding the Fourth Proportional to 716.88, 993.48 and 703.92

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Solution

The fourth proportional to 716.88, 993.48 and 703.92 is: 975.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.88 : 993.48 = 703.92 : x
  2. Step 2: Convert to fraction form
    716.88/993.48 = 703.92/x
  3. Step 3: Cross multiply
    716.88x = 993.48 × 703.92
  4. Step 4: Simplify right side
    716.88x = 699,330.44
  5. Step 5: Solve for x
    x = 699,330.44/716.88
  6. Step 6: Final answer
    x = 975.52

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.