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Finding the Fourth Proportional to 834.73, 1,152.45 and 520.20

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Solution

The fourth proportional to 834.73, 1,152.45 and 520.20 is: 718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.73 : 1,152.45 = 520.20 : x
  2. Step 2: Convert to fraction form
    834.73/1,152.45 = 520.20/x
  3. Step 3: Cross multiply
    834.73x = 1,152.45 × 520.20
  4. Step 4: Simplify right side
    834.73x = 599,504.49
  5. Step 5: Solve for x
    x = 599,504.49/834.73
  6. Step 6: Final answer
    x = 718.20

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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.