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Finding the Fourth Proportional to 828.45, 1,242.41 and 366.22

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Solution

The fourth proportional to 828.45, 1,242.41 and 366.22 is: 549.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.45 : 1,242.41 = 366.22 : x
  2. Step 2: Convert to fraction form
    828.45/1,242.41 = 366.22/x
  3. Step 3: Cross multiply
    828.45x = 1,242.41 × 366.22
  4. Step 4: Simplify right side
    828.45x = 454,998.32
  5. Step 5: Solve for x
    x = 454,998.32/828.45
  6. Step 6: Final answer
    x = 549.21

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1.5x scale

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.