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Finding the Fourth Proportional to 941.63, 1,411.50 and 454.41

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Solution

The fourth proportional to 941.63, 1,411.50 and 454.41 is: 681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.63 : 1,411.50 = 454.41 : x
  2. Step 2: Convert to fraction form
    941.63/1,411.50 = 454.41/x
  3. Step 3: Cross multiply
    941.63x = 1,411.50 × 454.41
  4. Step 4: Simplify right side
    941.63x = 641,399.72
  5. Step 5: Solve for x
    x = 641,399.72/941.63
  6. Step 6: Final answer
    x = 681.16

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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.