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Finding the Fourth Proportional to 655.93, 983.94 and 381.94

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Solution

The fourth proportional to 655.93, 983.94 and 381.94 is: 572.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.93 : 983.94 = 381.94 : x
  2. Step 2: Convert to fraction form
    655.93/983.94 = 381.94/x
  3. Step 3: Cross multiply
    655.93x = 983.94 × 381.94
  4. Step 4: Simplify right side
    655.93x = 375,806.04
  5. Step 5: Solve for x
    x = 375,806.04/655.93
  6. Step 6: Final answer
    x = 572.94

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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.