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Finding the Fourth Proportional to 450.75, 676.05 and 320.36

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Solution

The fourth proportional to 450.75, 676.05 and 320.36 is: 480.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.75 : 676.05 = 320.36 : x
  2. Step 2: Convert to fraction form
    450.75/676.05 = 320.36/x
  3. Step 3: Cross multiply
    450.75x = 676.05 × 320.36
  4. Step 4: Simplify right side
    450.75x = 216,574.80
  5. Step 5: Solve for x
    x = 216,574.80/450.75
  6. Step 6: Final answer
    x = 480.48

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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.