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Finding the Fourth Proportional to 713.73, 1,074.87 and 628.00

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Solution

The fourth proportional to 713.73, 1,074.87 and 628.00 is: 945.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.73 : 1,074.87 = 628.00 : x
  2. Step 2: Convert to fraction form
    713.73/1,074.87 = 628.00/x
  3. Step 3: Cross multiply
    713.73x = 1,074.87 × 628.00
  4. Step 4: Simplify right side
    713.73x = 675,019.70
  5. Step 5: Solve for x
    x = 675,019.70/713.73
  6. Step 6: Final answer
    x = 945.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.