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Finding the Fourth Proportional to 523.67, 722.03 and 490.86

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Solution

The fourth proportional to 523.67, 722.03 and 490.86 is: 676.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.67 : 722.03 = 490.86 : x
  2. Step 2: Convert to fraction form
    523.67/722.03 = 490.86/x
  3. Step 3: Cross multiply
    523.67x = 722.03 × 490.86
  4. Step 4: Simplify right side
    523.67x = 354,413.19
  5. Step 5: Solve for x
    x = 354,413.19/523.67
  6. Step 6: Final answer
    x = 676.79

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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.