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Finding the Fourth Proportional to 607.96, 838.90 and 371.80

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Solution

The fourth proportional to 607.96, 838.90 and 371.80 is: 513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.96 : 838.90 = 371.80 : x
  2. Step 2: Convert to fraction form
    607.96/838.90 = 371.80/x
  3. Step 3: Cross multiply
    607.96x = 838.90 × 371.80
  4. Step 4: Simplify right side
    607.96x = 311,903.02
  5. Step 5: Solve for x
    x = 311,903.02/607.96
  6. Step 6: Final answer
    x = 513.03

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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.