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Finding the Fourth Proportional to 523.87, 722.94 and 287.83

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Solution

The fourth proportional to 523.87, 722.94 and 287.83 is: 397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.87 : 722.94 = 287.83 : x
  2. Step 2: Convert to fraction form
    523.87/722.94 = 287.83/x
  3. Step 3: Cross multiply
    523.87x = 722.94 × 287.83
  4. Step 4: Simplify right side
    523.87x = 208,083.82
  5. Step 5: Solve for x
    x = 208,083.82/523.87
  6. Step 6: Final answer
    x = 397.21

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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.