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Finding the Fourth Proportional to 1,692.89, 2,539.17 and 522.58

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Solution

The fourth proportional to 1,692.89, 2,539.17 and 522.58 is: 783.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.89 : 2,539.17 = 522.58 : x
  2. Step 2: Convert to fraction form
    1,692.89/2,539.17 = 522.58/x
  3. Step 3: Cross multiply
    1,692.89x = 2,539.17 × 522.58
  4. Step 4: Simplify right side
    1,692.89x = 1,326,904.15
  5. Step 5: Solve for x
    x = 1,326,904.15/1,692.89
  6. Step 6: Final answer
    x = 783.81

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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.