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Finding the Fourth Proportional to 524.20, 723.78 and 459.40

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Solution

The fourth proportional to 524.20, 723.78 and 459.40 is: 634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.20 : 723.78 = 459.40 : x
  2. Step 2: Convert to fraction form
    524.20/723.78 = 459.40/x
  3. Step 3: Cross multiply
    524.20x = 723.78 × 459.40
  4. Step 4: Simplify right side
    524.20x = 332,504.53
  5. Step 5: Solve for x
    x = 332,504.53/524.20
  6. Step 6: Final answer
    x = 634.31

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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.