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Finding the Fourth Proportional to 834.09, 1,150.18 and 716.45

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Solution

The fourth proportional to 834.09, 1,150.18 and 716.45 is: 987.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.09 : 1,150.18 = 716.45 : x
  2. Step 2: Convert to fraction form
    834.09/1,150.18 = 716.45/x
  3. Step 3: Cross multiply
    834.09x = 1,150.18 × 716.45
  4. Step 4: Simplify right side
    834.09x = 824,046.46
  5. Step 5: Solve for x
    x = 824,046.46/834.09
  6. Step 6: Final answer
    x = 987.96

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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.