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Finding the Fourth Proportional to 493.28, 739.74 and 164.16

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Solution

The fourth proportional to 493.28, 739.74 and 164.16 is: 246.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.28 : 739.74 = 164.16 : x
  2. Step 2: Convert to fraction form
    493.28/739.74 = 164.16/x
  3. Step 3: Cross multiply
    493.28x = 739.74 × 164.16
  4. Step 4: Simplify right side
    493.28x = 121,435.72
  5. Step 5: Solve for x
    x = 121,435.72/493.28
  6. Step 6: Final answer
    x = 246.18

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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.