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Finding the Fourth Proportional to 456.48, 683.64 and 450

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Solution

The fourth proportional to 456.48, 683.64 and 450 is: 673.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.48 : 683.64 = 450 : x
  2. Step 2: Convert to fraction form
    456.48/683.64 = 450/x
  3. Step 3: Cross multiply
    456.48x = 683.64 × 450
  4. Step 4: Simplify right side
    456.48x = 307,638
  5. Step 5: Solve for x
    x = 307,638/456.48
  6. Step 6: Final answer
    x = 673.94

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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.