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Finding the Fourth Proportional to 834.39, 1,151.40 and 461.36

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Solution

The fourth proportional to 834.39, 1,151.40 and 461.36 is: 636.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.39 : 1,151.40 = 461.36 : x
  2. Step 2: Convert to fraction form
    834.39/1,151.40 = 461.36/x
  3. Step 3: Cross multiply
    834.39x = 1,151.40 × 461.36
  4. Step 4: Simplify right side
    834.39x = 531,209.90
  5. Step 5: Solve for x
    x = 531,209.90/834.39
  6. Step 6: Final answer
    x = 636.64

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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.