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Finding the Fourth Proportional to 1,693.39, 2,540.32 and 523.49

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Solution

The fourth proportional to 1,693.39, 2,540.32 and 523.49 is: 785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.39 : 2,540.32 = 523.49 : x
  2. Step 2: Convert to fraction form
    1,693.39/2,540.32 = 523.49/x
  3. Step 3: Cross multiply
    1,693.39x = 2,540.32 × 523.49
  4. Step 4: Simplify right side
    1,693.39x = 1,329,818.11
  5. Step 5: Solve for x
    x = 1,329,818.11/1,693.39
  6. Step 6: Final answer
    x = 785.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.