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Finding the Fourth Proportional to 828.87, 1,242.88 and 366.10

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Solution

The fourth proportional to 828.87, 1,242.88 and 366.10 is: 548.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.87 : 1,242.88 = 366.10 : x
  2. Step 2: Convert to fraction form
    828.87/1,242.88 = 366.10/x
  3. Step 3: Cross multiply
    828.87x = 1,242.88 × 366.10
  4. Step 4: Simplify right side
    828.87x = 455,021.34
  5. Step 5: Solve for x
    x = 455,021.34/828.87
  6. Step 6: Final answer
    x = 548.97

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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.