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Finding the Fourth Proportional to 756.18, 1,043.63 and 461.39

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Solution

The fourth proportional to 756.18, 1,043.63 and 461.39 is: 636.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.18 : 1,043.63 = 461.39 : x
  2. Step 2: Convert to fraction form
    756.18/1,043.63 = 461.39/x
  3. Step 3: Cross multiply
    756.18x = 1,043.63 × 461.39
  4. Step 4: Simplify right side
    756.18x = 481,512.92
  5. Step 5: Solve for x
    x = 481,512.92/756.18
  6. Step 6: Final answer
    x = 636.77

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1.5x scale

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.