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Finding the Fourth Proportional to 1,471.38, 2,030.68 and 850.38

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Solution

The fourth proportional to 1,471.38, 2,030.68 and 850.38 is: 1,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.38 : 2,030.68 = 850.38 : x
  2. Step 2: Convert to fraction form
    1,471.38/2,030.68 = 850.38/x
  3. Step 3: Cross multiply
    1,471.38x = 2,030.68 × 850.38
  4. Step 4: Simplify right side
    1,471.38x = 1,726,849.66
  5. Step 5: Solve for x
    x = 1,726,849.66/1,471.38
  6. Step 6: Final answer
    x = 1,173.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.