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Finding the Fourth Proportional to 523.62, 721.60 and 375.99

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Solution

The fourth proportional to 523.62, 721.60 and 375.99 is: 518.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.62 : 721.60 = 375.99 : x
  2. Step 2: Convert to fraction form
    523.62/721.60 = 375.99/x
  3. Step 3: Cross multiply
    523.62x = 721.60 × 375.99
  4. Step 4: Simplify right side
    523.62x = 271,314.38
  5. Step 5: Solve for x
    x = 271,314.38/523.62
  6. Step 6: Final answer
    x = 518.15

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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.