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Finding the Fourth Proportional to 773.82, 1,159.21 and 448.50

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Solution

The fourth proportional to 773.82, 1,159.21 and 448.50 is: 671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.82 : 1,159.21 = 448.50 : x
  2. Step 2: Convert to fraction form
    773.82/1,159.21 = 448.50/x
  3. Step 3: Cross multiply
    773.82x = 1,159.21 × 448.50
  4. Step 4: Simplify right side
    773.82x = 519,910.59
  5. Step 5: Solve for x
    x = 519,910.59/773.82
  6. Step 6: Final answer
    x = 671.88

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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.