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Finding the Fourth Proportional to 523.43, 722.31 and 346.18

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Solution

The fourth proportional to 523.43, 722.31 and 346.18 is: 477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.43 : 722.31 = 346.18 : x
  2. Step 2: Convert to fraction form
    523.43/722.31 = 346.18/x
  3. Step 3: Cross multiply
    523.43x = 722.31 × 346.18
  4. Step 4: Simplify right side
    523.43x = 250,049.28
  5. Step 5: Solve for x
    x = 250,049.28/523.43
  6. Step 6: Final answer
    x = 477.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.