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Finding the Fourth Proportional to 834.10, 1,247.52 and 681.04

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Solution

The fourth proportional to 834.10, 1,247.52 and 681.04 is: 1,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.10 : 1,247.52 = 681.04 : x
  2. Step 2: Convert to fraction form
    834.10/1,247.52 = 681.04/x
  3. Step 3: Cross multiply
    834.10x = 1,247.52 × 681.04
  4. Step 4: Simplify right side
    834.10x = 849,611.02
  5. Step 5: Solve for x
    x = 849,611.02/834.10
  6. Step 6: Final answer
    x = 1,018.60

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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.