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Finding the Fourth Proportional to 773.46, 1,158.96 and 628.46

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Solution

The fourth proportional to 773.46, 1,158.96 and 628.46 is: 941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.46 : 1,158.96 = 628.46 : x
  2. Step 2: Convert to fraction form
    773.46/1,158.96 = 628.46/x
  3. Step 3: Cross multiply
    773.46x = 1,158.96 × 628.46
  4. Step 4: Simplify right side
    773.46x = 728,360.00
  5. Step 5: Solve for x
    x = 728,360.00/773.46
  6. Step 6: Final answer
    x = 941.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.