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Finding the Fourth Proportional to 493.26, 739.99 and 310.45

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Solution

The fourth proportional to 493.26, 739.99 and 310.45 is: 465.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.26 : 739.99 = 310.45 : x
  2. Step 2: Convert to fraction form
    493.26/739.99 = 310.45/x
  3. Step 3: Cross multiply
    493.26x = 739.99 × 310.45
  4. Step 4: Simplify right side
    493.26x = 229,729.90
  5. Step 5: Solve for x
    x = 229,729.90/493.26
  6. Step 6: Final answer
    x = 465.74

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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.