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Finding the Fourth Proportional to 655.87, 983.92 and 193.65

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Solution

The fourth proportional to 655.87, 983.92 and 193.65 is: 290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.87 : 983.92 = 193.65 : x
  2. Step 2: Convert to fraction form
    655.87/983.92 = 193.65/x
  3. Step 3: Cross multiply
    655.87x = 983.92 × 193.65
  4. Step 4: Simplify right side
    655.87x = 190,536.11
  5. Step 5: Solve for x
    x = 190,536.11/655.87
  6. Step 6: Final answer
    x = 290.51

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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.