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Finding the Fourth Proportional to 1,745.75, 2,617.82 and 649.42

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Solution

The fourth proportional to 1,745.75, 2,617.82 and 649.42 is: 973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.75 : 2,617.82 = 649.42 : x
  2. Step 2: Convert to fraction form
    1,745.75/2,617.82 = 649.42/x
  3. Step 3: Cross multiply
    1,745.75x = 2,617.82 × 649.42
  4. Step 4: Simplify right side
    1,745.75x = 1,700,057.31
  5. Step 5: Solve for x
    x = 1,700,057.31/1,745.75
  6. Step 6: Final answer
    x = 973.82

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1.5x scale

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.