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Finding the Fourth Proportional to 646.45, 969.13 and 450.88

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Solution

The fourth proportional to 646.45, 969.13 and 450.88 is: 675.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.45 : 969.13 = 450.88 : x
  2. Step 2: Convert to fraction form
    646.45/969.13 = 450.88/x
  3. Step 3: Cross multiply
    646.45x = 969.13 × 450.88
  4. Step 4: Simplify right side
    646.45x = 436,961.33
  5. Step 5: Solve for x
    x = 436,961.33/646.45
  6. Step 6: Final answer
    x = 675.94

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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.