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Finding the Fourth Proportional to 653.75, 981.03 and 379.97

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Solution

The fourth proportional to 653.75, 981.03 and 379.97 is: 570.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.75 : 981.03 = 379.97 : x
  2. Step 2: Convert to fraction form
    653.75/981.03 = 379.97/x
  3. Step 3: Cross multiply
    653.75x = 981.03 × 379.97
  4. Step 4: Simplify right side
    653.75x = 372,761.97
  5. Step 5: Solve for x
    x = 372,761.97/653.75
  6. Step 6: Final answer
    x = 570.19

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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.