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Finding the Fourth Proportional to 493.71, 739.91 and 262.77

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Solution

The fourth proportional to 493.71, 739.91 and 262.77 is: 393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.71 : 739.91 = 262.77 : x
  2. Step 2: Convert to fraction form
    493.71/739.91 = 262.77/x
  3. Step 3: Cross multiply
    493.71x = 739.91 × 262.77
  4. Step 4: Simplify right side
    493.71x = 194,424.84
  5. Step 5: Solve for x
    x = 194,424.84/493.71
  6. Step 6: Final answer
    x = 393.80

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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.