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Finding the Fourth Proportional to 1,692.92, 2,539.40 and 460.32

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Solution

The fourth proportional to 1,692.92, 2,539.40 and 460.32 is: 690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.92 : 2,539.40 = 460.32 : x
  2. Step 2: Convert to fraction form
    1,692.92/2,539.40 = 460.32/x
  3. Step 3: Cross multiply
    1,692.92x = 2,539.40 × 460.32
  4. Step 4: Simplify right side
    1,692.92x = 1,168,936.61
  5. Step 5: Solve for x
    x = 1,168,936.61/1,692.92
  6. Step 6: Final answer
    x = 690.49

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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.