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Finding the Fourth Proportional to 773.66, 1,059.12 and 768.26

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Solution

The fourth proportional to 773.66, 1,059.12 and 768.26 is: 1,051.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.66 : 1,059.12 = 768.26 : x
  2. Step 2: Convert to fraction form
    773.66/1,059.12 = 768.26/x
  3. Step 3: Cross multiply
    773.66x = 1,059.12 × 768.26
  4. Step 4: Simplify right side
    773.66x = 813,679.53
  5. Step 5: Solve for x
    x = 813,679.53/773.66
  6. Step 6: Final answer
    x = 1,051.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.