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Finding the Fourth Proportional to 493.65, 739.70 and 310.66

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Solution

The fourth proportional to 493.65, 739.70 and 310.66 is: 465.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.65 : 739.70 = 310.66 : x
  2. Step 2: Convert to fraction form
    493.65/739.70 = 310.66/x
  3. Step 3: Cross multiply
    493.65x = 739.70 × 310.66
  4. Step 4: Simplify right side
    493.65x = 229,792.96
  5. Step 5: Solve for x
    x = 229,792.96/493.65
  6. Step 6: Final answer
    x = 465.50

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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.