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Finding the Fourth Proportional to 835.54, 1,253.38 and 546.38

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Solution

The fourth proportional to 835.54, 1,253.38 and 546.38 is: 819.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.54 : 1,253.38 = 546.38 : x
  2. Step 2: Convert to fraction form
    835.54/1,253.38 = 546.38/x
  3. Step 3: Cross multiply
    835.54x = 1,253.38 × 546.38
  4. Step 4: Simplify right side
    835.54x = 684,821.76
  5. Step 5: Solve for x
    x = 684,821.76/835.54
  6. Step 6: Final answer
    x = 819.62

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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.