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Finding the Fourth Proportional to 1,692.77, 2,539.25 and 522.80

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Solution

The fourth proportional to 1,692.77, 2,539.25 and 522.80 is: 784.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.77 : 2,539.25 = 522.80 : x
  2. Step 2: Convert to fraction form
    1,692.77/2,539.25 = 522.80/x
  3. Step 3: Cross multiply
    1,692.77x = 2,539.25 × 522.80
  4. Step 4: Simplify right side
    1,692.77x = 1,327,530.36
  5. Step 5: Solve for x
    x = 1,327,530.36/1,692.77
  6. Step 6: Final answer
    x = 784.23

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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.