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Finding the Fourth Proportional to 943.63, 1,414.50 and 456.41

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Solution

The fourth proportional to 943.63, 1,414.50 and 456.41 is: 684.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.63 : 1,414.50 = 456.41 : x
  2. Step 2: Convert to fraction form
    943.63/1,414.50 = 456.41/x
  3. Step 3: Cross multiply
    943.63x = 1,414.50 × 456.41
  4. Step 4: Simplify right side
    943.63x = 645,591.95
  5. Step 5: Solve for x
    x = 645,591.95/943.63
  6. Step 6: Final answer
    x = 684.16

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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.