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Finding the Fourth Proportional to 1,371.45, 2,057.17 and 447.00

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Solution

The fourth proportional to 1,371.45, 2,057.17 and 447.00 is: 670.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.45 : 2,057.17 = 447.00 : x
  2. Step 2: Convert to fraction form
    1,371.45/2,057.17 = 447.00/x
  3. Step 3: Cross multiply
    1,371.45x = 2,057.17 × 447.00
  4. Step 4: Simplify right side
    1,371.45x = 919,557.31
  5. Step 5: Solve for x
    x = 919,557.31/1,371.45
  6. Step 6: Final answer
    x = 670.50

Related Problems

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Double scale
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Similar ratio
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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.