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Finding the Fourth Proportional to 645.00, 890.10 and 350.27

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Solution

The fourth proportional to 645.00, 890.10 and 350.27 is: 483.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.00 : 890.10 = 350.27 : x
  2. Step 2: Convert to fraction form
    645.00/890.10 = 350.27/x
  3. Step 3: Cross multiply
    645.00x = 890.10 × 350.27
  4. Step 4: Simplify right side
    645.00x = 311,778.87
  5. Step 5: Solve for x
    x = 311,778.87/645.00
  6. Step 6: Final answer
    x = 483.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.