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Finding the Fourth Proportional to 968.90, 1,453.50 and 352.49

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Solution

The fourth proportional to 968.90, 1,453.50 and 352.49 is: 528.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.90 : 1,453.50 = 352.49 : x
  2. Step 2: Convert to fraction form
    968.90/1,453.50 = 352.49/x
  3. Step 3: Cross multiply
    968.90x = 1,453.50 × 352.49
  4. Step 4: Simplify right side
    968.90x = 512,336.95
  5. Step 5: Solve for x
    x = 512,336.95/968.90
  6. Step 6: Final answer
    x = 528.78

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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.