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Finding the Fourth Proportional to 834.67, 1,252.62 and 315.18

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Solution

The fourth proportional to 834.67, 1,252.62 and 315.18 is: 473.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.67 : 1,252.62 = 315.18 : x
  2. Step 2: Convert to fraction form
    834.67/1,252.62 = 315.18/x
  3. Step 3: Cross multiply
    834.67x = 1,252.62 × 315.18
  4. Step 4: Simplify right side
    834.67x = 394,800.77
  5. Step 5: Solve for x
    x = 394,800.77/834.67
  6. Step 6: Final answer
    x = 473.00

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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.