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Finding the Fourth Proportional to 328.00, 491.97 and 108.62

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Solution

The fourth proportional to 328.00, 491.97 and 108.62 is: 162.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.00 : 491.97 = 108.62 : x
  2. Step 2: Convert to fraction form
    328.00/491.97 = 108.62/x
  3. Step 3: Cross multiply
    328.00x = 491.97 × 108.62
  4. Step 4: Simplify right side
    328.00x = 53,435.50
  5. Step 5: Solve for x
    x = 53,435.50/328.00
  6. Step 6: Final answer
    x = 162.91

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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.