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Finding the Fourth Proportional to 828.83, 1,243.46 and 366.71

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Solution

The fourth proportional to 828.83, 1,243.46 and 366.71 is: 550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.83 : 1,243.46 = 366.71 : x
  2. Step 2: Convert to fraction form
    828.83/1,243.46 = 366.71/x
  3. Step 3: Cross multiply
    828.83x = 1,243.46 × 366.71
  4. Step 4: Simplify right side
    828.83x = 455,981.17
  5. Step 5: Solve for x
    x = 455,981.17/828.83
  6. Step 6: Final answer
    x = 550.15

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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.