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Finding the Fourth Proportional to 834, 1,245.56 and 718.68

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Solution

The fourth proportional to 834, 1,245.56 and 718.68 is: 1,073.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    834 : 1,245.56 = 718.68 : x
  2. Step 2: Convert to fraction form
    834/1,245.56 = 718.68/x
  3. Step 3: Cross multiply
    834x = 1,245.56 × 718.68
  4. Step 4: Simplify right side
    834x = 895,155.47
  5. Step 5: Solve for x
    x = 895,155.47/834
  6. Step 6: Final answer
    x = 1,073.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.