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Finding the Fourth Proportional to 834.44, 1,152.84 and 711.32

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Solution

The fourth proportional to 834.44, 1,152.84 and 711.32 is: 982.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.44 : 1,152.84 = 711.32 : x
  2. Step 2: Convert to fraction form
    834.44/1,152.84 = 711.32/x
  3. Step 3: Cross multiply
    834.44x = 1,152.84 × 711.32
  4. Step 4: Simplify right side
    834.44x = 820,038.15
  5. Step 5: Solve for x
    x = 820,038.15/834.44
  6. Step 6: Final answer
    x = 982.74

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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.