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Finding the Fourth Proportional to 773.14, 1,159.86 and 310.96

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Solution

The fourth proportional to 773.14, 1,159.86 and 310.96 is: 466.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.14 : 1,159.86 = 310.96 : x
  2. Step 2: Convert to fraction form
    773.14/1,159.86 = 310.96/x
  3. Step 3: Cross multiply
    773.14x = 1,159.86 × 310.96
  4. Step 4: Simplify right side
    773.14x = 360,662.71
  5. Step 5: Solve for x
    x = 360,662.71/773.14
  6. Step 6: Final answer
    x = 466.49

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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.