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Finding the Fourth Proportional to 773.44, 1,159.64 and 499.38

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Solution

The fourth proportional to 773.44, 1,159.64 and 499.38 is: 748.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.44 : 1,159.64 = 499.38 : x
  2. Step 2: Convert to fraction form
    773.44/1,159.64 = 499.38/x
  3. Step 3: Cross multiply
    773.44x = 1,159.64 × 499.38
  4. Step 4: Simplify right side
    773.44x = 579,101.02
  5. Step 5: Solve for x
    x = 579,101.02/773.44
  6. Step 6: Final answer
    x = 748.73

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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.