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Finding the Fourth Proportional to 1,692.27, 2,538.07 and 459.52

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Solution

The fourth proportional to 1,692.27, 2,538.07 and 459.52 is: 689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.27 : 2,538.07 = 459.52 : x
  2. Step 2: Convert to fraction form
    1,692.27/2,538.07 = 459.52/x
  3. Step 3: Cross multiply
    1,692.27x = 2,538.07 × 459.52
  4. Step 4: Simplify right side
    1,692.27x = 1,166,286.43
  5. Step 5: Solve for x
    x = 1,166,286.43/1,692.27
  6. Step 6: Final answer
    x = 689.18

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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.