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Finding the Fourth Proportional to 884.30, 1,324.65 and 451.70

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Solution

The fourth proportional to 884.30, 1,324.65 and 451.70 is: 676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.30 : 1,324.65 = 451.70 : x
  2. Step 2: Convert to fraction form
    884.30/1,324.65 = 451.70/x
  3. Step 3: Cross multiply
    884.30x = 1,324.65 × 451.70
  4. Step 4: Simplify right side
    884.30x = 598,344.41
  5. Step 5: Solve for x
    x = 598,344.41/884.30
  6. Step 6: Final answer
    x = 676.63

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1.5x scale

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.