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Finding the Fourth Proportional to 387.89, 581.83 and 195.29

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Solution

The fourth proportional to 387.89, 581.83 and 195.29 is: 292.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.89 : 581.83 = 195.29 : x
  2. Step 2: Convert to fraction form
    387.89/581.83 = 195.29/x
  3. Step 3: Cross multiply
    387.89x = 581.83 × 195.29
  4. Step 4: Simplify right side
    387.89x = 113,622.18
  5. Step 5: Solve for x
    x = 113,622.18/387.89
  6. Step 6: Final answer
    x = 292.93

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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.