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Finding the Fourth Proportional to 1,371.45, 2,057.18 and 447.01

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Solution

The fourth proportional to 1,371.45, 2,057.18 and 447.01 is: 670.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.45 : 2,057.18 = 447.01 : x
  2. Step 2: Convert to fraction form
    1,371.45/2,057.18 = 447.01/x
  3. Step 3: Cross multiply
    1,371.45x = 2,057.18 × 447.01
  4. Step 4: Simplify right side
    1,371.45x = 919,574.33
  5. Step 5: Solve for x
    x = 919,574.33/1,371.45
  6. Step 6: Final answer
    x = 670.51

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Double scale
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Similar ratio
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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.