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Finding the Fourth Proportional to 551.43, 827.29 and 243.34

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Solution

The fourth proportional to 551.43, 827.29 and 243.34 is: 365.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.43 : 827.29 = 243.34 : x
  2. Step 2: Convert to fraction form
    551.43/827.29 = 243.34/x
  3. Step 3: Cross multiply
    551.43x = 827.29 × 243.34
  4. Step 4: Simplify right side
    551.43x = 201,313.17
  5. Step 5: Solve for x
    x = 201,313.17/551.43
  6. Step 6: Final answer
    x = 365.07

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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.