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Finding the Fourth Proportional to 655.84, 905.07 and 376.05

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Solution

The fourth proportional to 655.84, 905.07 and 376.05 is: 518.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.84 : 905.07 = 376.05 : x
  2. Step 2: Convert to fraction form
    655.84/905.07 = 376.05/x
  3. Step 3: Cross multiply
    655.84x = 905.07 × 376.05
  4. Step 4: Simplify right side
    655.84x = 340,351.57
  5. Step 5: Solve for x
    x = 340,351.57/655.84
  6. Step 6: Final answer
    x = 518.96

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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.