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Finding the Fourth Proportional to 834.85, 1,151.99 and 461.78

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Solution

The fourth proportional to 834.85, 1,151.99 and 461.78 is: 637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.85 : 1,151.99 = 461.78 : x
  2. Step 2: Convert to fraction form
    834.85/1,151.99 = 461.78/x
  3. Step 3: Cross multiply
    834.85x = 1,151.99 × 461.78
  4. Step 4: Simplify right side
    834.85x = 531,957.87
  5. Step 5: Solve for x
    x = 531,957.87/834.85
  6. Step 6: Final answer
    x = 637.19

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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.