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Finding the Fourth Proportional to 1,700.97, 2,549.07 and 921.39

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Solution

The fourth proportional to 1,700.97, 2,549.07 and 921.39 is: 1,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.97 : 2,549.07 = 921.39 : x
  2. Step 2: Convert to fraction form
    1,700.97/2,549.07 = 921.39/x
  3. Step 3: Cross multiply
    1,700.97x = 2,549.07 × 921.39
  4. Step 4: Simplify right side
    1,700.97x = 2,348,692.39
  5. Step 5: Solve for x
    x = 2,348,692.39/1,700.97
  6. Step 6: Final answer
    x = 1,380.80

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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.