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Finding the Fourth Proportional to 702.45, 969.12 and 450.09

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Solution

The fourth proportional to 702.45, 969.12 and 450.09 is: 620.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.45 : 969.12 = 450.09 : x
  2. Step 2: Convert to fraction form
    702.45/969.12 = 450.09/x
  3. Step 3: Cross multiply
    702.45x = 969.12 × 450.09
  4. Step 4: Simplify right side
    702.45x = 436,191.22
  5. Step 5: Solve for x
    x = 436,191.22/702.45
  6. Step 6: Final answer
    x = 620.96

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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.